Directions (1-5): Calculate the approximate value of the question mark (?) in the given questions:
Directions (6-10): What will come in the place of question mark (?) in following number series.
Q6. 24, 1354, 2081, 2421, ?, 2564
(a) 2542
(b) 2540
(c) 2548
(d) 2556
(e) 2560
Q7. 56, 8, 48, 9.6, ?, 12.8
(a) 38.6
(b) 38.4
(c) 38.2
(d) 38.8
(e) 39.6
Q8. 16, 256, 2048, 8192, 16384, ?
(a) 16396
(b) 16384
(c) 16380
(d) 16388
(e) 16390
Q9. 96, 52, 84, 218, 773, ?
(a) 3496.5
(b) 3486.5
(c) 3490.5
(d) 3487.5
(e) 3488.5
Q10. 1727, 998, 509, 212, ?, 2
(a) 59
(b) 63
(c) 67
(d) 69
(e) 73
Solutions
S7. Ans(b)
Sol.
Pattern of series –
56 ÷7=8
8 ×6=48
48 ÷5=9.6
? = 9.6 ×4=38.4
38.4 ÷3=12.8
S8. Ans(b)
Sol.
Pattern of series –
16 ×16=256
256 ×8=2048
2048 ×4=8192
8192 ×2=16384
? = 16384 ×1=16384
S9. Ans(c)
Sol.
Pattern of series –
96 ×0.5+4=52
52 ×1.5+6=84
84 ×2.5+8=218
218 ×3.5+10=773
? = 773 ×4.5+12=3490.5