3rd Class
Mental Ability
Numbers
Question Bank
Number System
question_answer
The number pattern given below is based on multiplication. Which one of the following numbers will replace the question mark (?) in the pattern?
A)680
B) 640
C)960
D) 320
E)None of these
Correct Answer:
B
Solution :
Answer (b) is correct. It is a multiplication pyramid. Clearly, \[5\times 4=20;\text{ }4\times 1=4;\text{ }2\times 1=2\]. And. \[20\times 4=80;\text{ }4\times 2=8\] Therefore, the required missing number \[=80\times 8=640\] Rest of the options is incorrect because of the correctness of option (b).