7th Class
Mathematics
Related to Competitive Exam
Question Bank
Mathematical Operations
question_answer
DIRECTIONS: In each of the following questions, three statements of numbers following same rules are given. Find the rule and accordingly find the value of the number? If 3 + 2 = 7, 4 + 3 = 10, 5 + 4 = 13, then 6 + 5 =?
A)17
B)18
C)15
D)16
Correct Answer:
D
Solution :
The rule is\[a+b=a+2b\] \[\therefore \] \[6+5=6+2\times 5=6+10=16\]