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Fill it by the correct answer from the four given options to complete the sequence

5, 11, 28, 53, _____, 175, 296.
(1) 89 (2) 123 (3) 126 (4) 152
7, 6, 11, 13, 15, 20, 19, 27, 23, _____.
(1) 27 (2) 34 (3) 36 (4) 37
4, 10, 18, 28, 40, _____, 70, 88.
(1) 36 (2) 44 (3) 54 (4) 64
21, _____, 55, 78, 105, 136.
(1) 36 (2) 38 (3) 42 (4) 45
3, 7, 13, 21, 31, ____, 57, 73.
(1) 39 (2) 43 (3) 49 (4) 53
24, 60, 120, 210, ____, 504, 720.
(1) 226 (2) 306 (3) 336 (4) 420

Anurag Mishra Professor Asked on 20th April 2016 in Maths.

4 Answer(s)

3. Answer: (3) 54

Solution:-
4 + 6 = 10, 10 + 8 = 18, 18 + 10 = 28, 28 + 12 = 40,

Same as,
40 + 14 = 54

Hence, the correct answer is option (3) 54.

5. Answer: (2) 43

Solution:-
3 + 4 = 7, 7 + (4 + 2)= 13,
13 + (6 +2) = 21,
21 + (8 + 2) = 31,

Same as,
31 + (10 + 2) = 43.

Hence, the correct answer is option (2) 43.

6. Answer: (3) 336

Solution:-
(3)^3 – 3 = 27 – 3
= 24,
(4)^3 – 4 = 64 – 4
= 60,
(5)^3 – 5 = 125 – 5
= 120,
(6)^3 – 6 = 216 – 6
= 210,

Same as,
(7)^3 – 7 = 343 – 7
= 336

Hence, the correct answer is option (3) 336.

Anurag Mishra Professor Answered on 23rd April 2016.

Sl.no1.

2*2+1=5,
3*3+2=11,
5*5+3=28,
7*7+4=53,
11*11+5=126

komall Default Answered on 30th April 2016.

2) 7,6,11,13,15,20,19,27,23,34
two series
7,11,15,19,23—-,6,13,20,27,34—

kkishore Default Answered on 2nd June 2016.

6)
ans:: 2*3*4=24
3*4*5=60
4*5*6=120
5*6*7=210
6*7*8=336…….so on

Ram Default Answered on 12th December 2016.