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\[3\times 4=14;\]\[5\times 6=33;\]\[7\times 8=60,\]then\[8\times 9=\]?
A)77
B)89
C)98
D)79
Correct Answer:
A
Solution :
The rule is: the digits and ......... by 2, 3, 4, 5 etc. \[\therefore \] \[8\times 9=(8.9)\]