Which of the following numbers can be placed at the sign of interrogation ? 6 8 7 36 64 49 24 48 ?

Which of the following numbers can be placed at the sign of interrogation ?

A 35

B 30

C 45

D 40

Correct Answer: Option A

Solution:

এক্ষেত্রে ৩য় সারি = ২য় সারি - ( ২ \( \times \) ১ম সারি )

24 = 36 - (6 \( \times \) 2)

48 = 64 - (8 \( \times \) 2)

? = 49 - ( 7 \( \times \) 2) = 35