Quiz -- 1

প্রশ্নব‌োধক চ‌িহ্ন‌িত স্থান‌ে কত হব‌ে ----

25, 24, 22, 19, 15, ?

উত্তর:
A. 4, B. 5, C. 10, D. 14

সমাধান:   
25 - 1 = 24
24 - 2 = 22
22 - 3 = 19
19 - 4 = 15
15 - 5 = 10

সঠিক উত্তর: C. 10   

IQ test -- Which number is next

Which number should come next in the following series -- 

10,  17,  26,  37,  ?

A. 45,  B. 46,  C. 50,  D. 49

Correct Answer: C. 50

Explanation:

3 * 3 + 1 = 10

4 * 4 + 1 = 17

5 * 5 + 1 = 26

6 * 6 + 1 = 37

7 * 7 + 1 = 50