Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Interest Compound Interest
On the compound interest, a sum is doubled to the original amount in 7 years. In how many years will it be 128 times its original amount? (In the year)
1
72
2
72 + 10
3
82 - 15
4
More than one of the above
5
None of the above