Select all 2-digit numbers in which the digit in the ones position is four times the digit in the tens position?

Find a number between 40 and 60 in which the digit in the ones position is two times the digit in the tens position?

Find the number you need to add to the largest 5-digit number to get the smallest 6-digit number?

Find the number you need to subtract from the smallest 6-digit number to get the largest 4-digit number?

What number will you get if you add 62 ten million to 350 ten thousand?

What number will you get if you add 22 ten million to 5 billion?

In a 5-digit number, the digit in the ones position is two times the digit in the tens position. The digits in the ones position, hundreds position, thousands position, and ten-thousands position are 8, 5, 2, and 3, respectively. What is the value of the number?

In a 5-digit number, the digit in the hundreds position is the product of digits in ones and tens positions. The digits in the ones position, hundreds position, thousands position, and ten-thousands position are 2, 8, 5, and 6, respectively. What is the value of the number?

A number is greater than 10,000 but smaller than 11,000. The digit in the hundreds position is the sum of digits in ones and tens positions. Suppose the digits in ones and tens positions are 3 and 5, respectively. What is the value of the number?

In number 856, if you exchange the position of digits in the ones and tens positions, which number will you get?