Quant Question Of The Day: 136
Let Tn = 1n + 2n + 3n + 4n. Find the number of values of n among first 100 positive integers such that Tn is divisible by 5.
- 48
- 50
- 67
- 75
See our previous ‘Questions of the Day’:
Quant Question Of The Day: 135
Quant Question Of The Day: 134
75
Only when n is of the form 4k+4, it will not be divisible by 5. (Using cyclicity to add the unit’s digit)