" Let "n=3^(100)," then for "n" the value of ten's digit is "

underset is Let n=3^(100) then for n the value of ten's digit

The number of all 2-digit numbers n such that n is equal the sum of the square of digit in its tens place and the cube of the digit in units place is

A number is larger than half of 100. It is more than 6 tens and less than 8 tens. The sum of its digits is 9. The tens digit is the double of the ones digit. What is the number?

Let sigma(n) denotes the sum of digits of a natural number n .If N is the smallest natural number such that sigma(N)=2020 , then find the value of sigma(5N+2021)

In a two-digit number, the units digit is 3 more than the ten's digit. The sum of the digits is 18 less than the original number. Find the product of the digits

Let a_n denote the number of all n-digit positive integers formed by the digits 0, 1, or both such that no consecutive digits in them are 0. Let b_n= The number of such n-digit integers ending with digit 1 and c_n= Then number of such n-digit integers with digit 0. The value of b_6 is

Let n denote the number of all n-digit positive integers formed by the digits 0, 1 or both such that no consecutive digits in them are 0. Let b_n = the number of such n-digit integers ending with digit 1 and c_n = the number of such n-digit integers ending with digit 0. The value of b_6 , is

Let n denote the number of all n-digit positive integers formed by the digits 0, 1 or both such that no consecutive digits in them are 0. Let b_n = the number of such n-digit integers ending with digit 1 and c_n = the number of such n-digit integers ending with digit 0. The value of b_6 , is