What would be the digit in the tens place of 7 nwhere ‘n’ is a natural number greater than 1?
0, 4
The correct answer is 0, 4.
This periodicity helps predict the digits without calculating very large numbers. The last digit of 7^n cycles as 7, 9, 3, 1. The last two digits cycle as 07, 49, 43, 01. The tens digit sequence is derived from the last two digits pattern.
Similar Questions
What would be the number in units place of the following expression?
122 × 128 × 961 × 826What would be the number in units place of the following expression 182 × 98 × 971 × 866?
If N = (307) 38 + (524) 20 , then what is the unit digit of N?
A seven-digit number 5702718 is divisible by 147. If we rearrange the digits of the number in descending order and subtract 4 more than three times of 17 from the new number which is formed, then the resultant number will be divisible by:
Important Questions from Unit Digit
What is the digit in the unit place of 3 99 ?
What is the digit in the unit place of 23 65 × 36 94 × 88 77 ?
What is the digit in the unit place of 3 99 ?
What is the digit at unit place in 28 96 × 26 92 × 94 22 ?
The digit in the units place of (34) 9 + (46) 21 - (43) 27 is:
