| Direction: What should come in place of question mark (?) in the following number series? | |||||
| 68 | ? | 77 | 104 | 168 | 293 |
A) 69
B) 70
C) 68
D) 74
E) Other than those given as options
Correct Answer: A
Solution :
The series is\[+{{1}^{3}},\,\,+{{2}^{3}},\,\,+{{3}^{3}},\,\,+{{4}^{3}},\,\,+{{5}^{3}},\,\,....\] \[i.e.\]\[68+{{1}^{3}}=69,\,\,69+{{2}^{3}}=77,\,\,77+{{3}^{3}}=104\], \[104+{{4}^{3}}=168,\,\,168+{{5}^{3}}=293,\,\,...\]
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