Directions (Q. 1 - 10) : Which will come in place of question mark (?) in the following number series?
1. 7 11 18 34 77 ?
2. 4 40 162 448 1000 ?
3. 7 14 23 34 47 ?
4. 1 10 33 76 145 ?
5. 9 41 253 2033 20341 ?
a) 242107
b) 243407
c) 244105
d) 245804
e) 246320
6. 1 14 90 ? 1824 5475 10952
e) none of this
7. 5 16 49 104 ? 280 401
e) none of this
8. 45000 8995 1794 ? 65.76 8.152
a) 360.76
b) 363.76
c) 353.80
d) 352.30
e) none of this
9. 1 4 21 104 ? 3384 23765
e) none of this
10) 3 732 1244 ? 1803 1928 1992
Solutions:
1. b) 7 11 18 34 77 201
4 7 16 43 124
3 9 27 81
2. d) 12x4, 22x10, 32x18, 42x28, 52x40, 62x54
3. a) 7 14 23 34 47 62
7 9 11 13 15
2 2 2 2
4. e) 12x2-1, 22x3-2, 32x4-3, 42x5-4, 52x6-5, 62x7
5. c) x4+5, x6+7, x8+9..
6. d) 1x7+7=14, 14x6+6=90, 90x5+5=455, 455x4+4=1824 ..
7. b) 5+11=16, 16+33=49, 49+55=104, 104+77=181
8. c) 45000/5-5=8995, 8995/5-5=1794, 1794/5-5=353.81757
9. a) (1+1)x2=4, (4+3)x3=21, (21+5)x4=104, (104+7)x5=555, (555+9)x6=3384
10. e) 3+(9)3=732, 732+(8)3=1244, 1244+(7)3=1587
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