Number Series Completion - Study Mode

[#201] Find the missing term: 1, 5, 14, 30, 55, 91,?
Correct Answer

(B) 140

Explanation

Solution: The pattern is + 4, + 9, + 6, + 25, + 36,........i.e.,+ 2 2 ,+ 3 2 + 4 2 + 5 2 + 6 2 ......... So, the missing term = 91 + 7 2 = 91+ 49 = 140

[#202] Find the missing term: 4832, 5840, 6848, ?
Correct Answer

(C) 7856

Explanation

Solution: The pattern is + 1008. So, the missing term = 6848 + 1008 = 7856.

[#203] What will come at the place of question mark ? 1, 9, 25, 49, ?, 121.
Correct Answer

(D) 81

Explanation

Solution: 1 2 = 1. 3 2 = 9. 5 2 = 25. 7 2 = 49. 9 2 = 81. 11 2 = 121.

[#204] What will come at the place of question mark? 4, 7, 12, 19, 28, ?
Correct Answer

(D) 39

Explanation

Solution: First term : 4 Second term: 4+3 = 7 Third term : 7+5 = 12 Fourth term : 12+7 = 19. Fifth term : 19+9 = 28. Therefore, Next Terms : 28+11 = 39

[#205] What will come at the place of question mark ? 6, 11, 21, 36, 56, ?
Correct Answer

(C) 81

Explanation

Solution: 6 (+5)→ 11 (+10)→ 21 (+15)→ 36 (+20)→ 56 (+25) → 81.