In 1A`xx` A 9A, 1A and 9A are two digit numbers. Find A.

In 1A xx A = 7A , IA and 7A two digit numbers. Find A

In A2+1A = 45, A2 and 1A are two digit number, then find A

In BA xx B3=57A. BA, B3 are two digit numbers and 57A is a 3 digit number.

Seven digits from the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9 are written in random order. Find the probability that the seven digited number is divisible by 9.

Represent 9+2 , 9+(-1) and 9+(-3) on the number line.

Make 3 different 3 digit numbers using 1, 9 and 8 where each digit can be used only once. Check which of these numbers is divisible by 9

Write the greatest and smallest six digit numbers formed by all the digits 6,4,0,8,7,9, and find sum and difference of those numbers.

Find the equations with roots 9 and 1.

Find the number of three digited numbers that can be formed using 7,6,8 and 9 when each digit may be used any number of times ?