question_answer1) Which of the following are two consecutive prime numbers that differ by 2?
A) Co-primes
B) Twin primes
C) Composite numbers
D) Both (a) and (b)
View Answer play_arrowquestion_answer2) Identify the numbers with only 1 as their common factor.
A) Co-prime numbers
B) Twin prime numbers
C) Composite numbers
D) Prime numbers
View Answer play_arrowquestion_answer3) Find the smallest whole number that is divisible by \[10\] and\[12\].
A) \[40\]
B) \[30\]
C) \[72\]
D) \[60\]
View Answer play_arrowquestion_answer4) Which of the following are not multiples of\[2\]?
A) Even numbers
B) Odd numbers
C) Prime numbers
D) Composite numbers
View Answer play_arrowquestion_answer5) Which type of numbers have more than two factors?
A) Even numbers
B) Prime numbers
C) Composite numbers
D) Odd numbers
View Answer play_arrowA) \[468\]
B) \[540\]
C) \[504\]
D) \[432\]
View Answer play_arrowquestion_answer7) What is the \[L.C.M.\] of two co-prime numbers?
A) Their sum
B) Their difference
C) Their product
D) Their quotient
View Answer play_arrowA) \[23\]
B) \[24\]
C) \[36\]
D) \[12\]
View Answer play_arrowquestion_answer9) A Find the \[L.C.M.\] of \[12,\,\,24\] and\[36\].
A) \[36\]
B) \[24\]
C) \[72\]
D) \[108\]
View Answer play_arrowquestion_answer10) Identify an example for twin primes.
A) \[5,\,\,11\]
B) \[3,\,\,5\]
C) \[11,\,\,17\]
D) \[3,\,\,7\]
View Answer play_arrowquestion_answer11) What is the \[H.C.F.\] of \[36\] and\[144\]?
A) \[36\]
B) \[144\]
C) \[4\]
D) \[2\]
View Answer play_arrowquestion_answer12) What is the \[H.C.F.\] of two co-prime numbers?
A) \[1\]
B) \[0\]
C) \[2\]
D) Their product
View Answer play_arrowA) \[4500\]
B) \[4600\]
C) \[4400\]
D) \[1000\]
View Answer play_arrowquestion_answer14) What are the common factors of\[9\]and\[36\]?
A) \[1,\,\,3,\,\,9\]
B) \[1,\,\,4,\,\,3,\,\,5,\,\,9\]
C) \[1,\,\,4,\,\,5\]
D) \[1,\,\,3,\,\,4,\,\,9\]
View Answer play_arrowquestion_answer15) Find three common multiples of\[18\]and\[6\].
A) \[18,\,\,6,\,\,9\]
B) \[18,\,\,36,\,\,6\]
C) \[36,\,\,54,\,\,72\]
D) \[1,\,\,6,\,\,18\]
View Answer play_arrowA) \[2\]
B) \[4\]
C) \[3\]
D) \[0\]
View Answer play_arrowA) \[23\]
B) \[17\]
C) \[25\]
D) \[19\]
View Answer play_arrowquestion_answer18) How many prime numbers are there from \[50\] to\[100\]?
A) \[18\]
B) \[12\]
C) \[10\]
D) \[20\]
View Answer play_arrowquestion_answer19) How is \[20\] written as the product of primes?
A) \[2\times 5\]
B) \[2\times 2\times 3\times 5\]
C) \[2\times 2\times 5\]
D) \[2\times 2\times 3\]
View Answer play_arrowquestion_answer20) Identify the correct statement.
A) The L.C.M. of two co-primes is their product.
B) The H.C.F. of twin primes is their product.
C) The largest factor of a number is 1.
D) The smallest factor of a number is the number itself.
View Answer play_arrowquestion_answer21) Which of the following sets of numbers have the same H.C.F.?
60 | 120 | 135 | |
650 | 230 | 180 | 315 |
250 | 450 | 240 | 495 |
P | Q | R | S |
A) \[Q\]and\[R\]
B) \[P\]and\[R\]
C) \[R\]and\[S\]
D) \[P\]and\[Q\]
View Answer play_arrowquestion_answer22) How many times the H.C.F. of\[11,\,\,33\]and\[88\]is their L.C.M?
A) \[11\]
B) \[24\]
C) \[22\]
D) \[3629\]
View Answer play_arrowquestion_answer23) Identify an example for co-prime numbers.
A) \[25,\,\,14\]
B) \[18,\,\,16\]
C) \[9,\,\,18\]
D) \[11,\,\,77\]
View Answer play_arrowquestion_answer24) The L.C.M. of two numbers is \[10\] times their H.C.F. Find the numbers.
A) \[24,\,\,96\]
B) \[16,\,\,15\]
C) \[24,\,\,480\]
D) \[24,\,\,240\]
View Answer play_arrowquestion_answer25) What is the sum of the first five multiples of\[8\]?
A) \[90\]
B) \[60\]
C) \[30\]
D) \[120\]
View Answer play_arrowquestion_answer26) Find the least \[4-\]digit number that is divisible by\[8\].
A) \[1000\]
B) \[1008\]
C) \[4000\]
D) \[1016\]
View Answer play_arrowquestion_answer27) Find the product of all the factors of\[40\].
A) \[265\times 100\]
B) \[256\times 10000\]
C) \[256\times 1000\]
D) \[265\times 1000\]
View Answer play_arrowquestion_answer28) How many factors does \[256\] have?
A) \[9\]
B) \[8\]
C) \[10\]
D) \[12\]
View Answer play_arrowquestion_answer29) How many hundreds are there in the sum of the factors of\[140\]?
A) \[300\]
B) \[30\]
C) \[336\]
D) \[3\]
View Answer play_arrowA) The digits in hundreds and tens places of the sum are the same.
B) The digit in ones place is the same as the digit in tens place.
C) The digit in hundreds place is the same as the digit in ones place.
D) The digit in ones place is the least.
View Answer play_arrowA) \[5,\,\,9\]
B) \[5,\,\,3\]
C) \[9,\,\,4\]
D) \[2,\,\,5\]
View Answer play_arrowquestion_answer32) Observe the twin primes in the table.
(3, 5) | (5, 7) | (11, 13) | (17, 19) |
P | Q | R | S |
A) \[Q\]and\[R\]
B) \[P\]and\[S\]
C) \[P\]and\[Q\]
D) \[P\]and\[R\]
View Answer play_arrowA) \[3240\]
B) \[2430\]
C) \[3420\]
D) \[2304\]
View Answer play_arrowA) \[70\]
B) \[76\]
C) \[90\]
D) \[85\]
View Answer play_arrowA) \[15\,\,years\]
B) \[21\,\,years\]
C) \[14\,\,years\]
D) \[20\,\,years\]
View Answer play_arrowA) \[84\]
B) \[42\]
C) \[14\]
D) \[7\]
View Answer play_arrowquestion_answer37) Study the information given in the box. What is the value of\[X\]?
A) \[42\]
B) \[28\]
C) \[21\]
D) \[12\]
View Answer play_arrowA) \[24\]
B) \[28\]
C) \[12\]
D) \[40\]
View Answer play_arrowA) \[48\]
B) \[58\]
C) \[78\]
D) \[68\]
View Answer play_arrowA) \[1\]
B) \[100\]
C) \[10\]
D) \[1000\]
View Answer play_arrowquestion_answer41) How many twin primes are there between \[1\] and\[100\]?
A) \[6\]
B) \[10\]
C) \[7\]
D) \[8\]
View Answer play_arrowquestion_answer42) Which of these numbers has \[2,\,\,3,\,\,4\] and \[10\] as factors?
A) \[20709\]
B) \[108240\]
C) \[18045\]
D) \[20801\]
View Answer play_arrowA) \[0\]
B) \[1\]
C) \[2\]
D) \[6\]
View Answer play_arrowA) \[4\]
B) \[2\]
C) \[3\]
D) \[5\]
View Answer play_arrowA) \[60\]
B) \[37\]
C) \[23\]
D) \[140\]
View Answer play_arrowquestion_answer46) Which of the following numbers has \[8\] as factor?
A) \[136\]
B) \[228\]
C) \[842\]
D) \[748\]
View Answer play_arrowquestion_answer47) The L.C.M. of \[3,\,\,6\] and \[x\] is\[18\]. What is the possible value of\[x\]?
A) \[36\]
B) \[6\]
C) \[18\]
D) \[3\]
View Answer play_arrowA) \[6\]
B) \[12\]
C) \[9\]
D) \[14\]
View Answer play_arrowA) \[4\]
B) \[32\]
C) \[16\]
D) \[40\]
View Answer play_arrowA) \[a=2,\,\,b=16\]
B) \[a=4,\,\,b=20\]
C) \[a=6,\,\,b=25\]
D) \[a=8,\,\,b=30\]
View Answer play_arrowquestion_answer51) From the given diagram, what is the value of\[p+q+r\]?
A) \[7\]
B) \[8\]
C) \[9\]
D) \[14\]
View Answer play_arrowquestion_answer52) The given figure shows some of the factors of\[156\]. What is the value of\[x\]?
A) \[16\]
B) \[8\]
C) \[15\]
D) \[39\]
View Answer play_arrowA) \[2\]and\[3\]
B) \[10\]and\[13\]
C) \[2\]and\[13\]
D) \[3\]and\[10\]
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