Study guides

☆☆

Q: What two digit number is twice the product of its digits?

Write your answer...

Submit

Still have questions?

Continue Learning about Algebra

47 Impossible problem!

If the number is odd, the last digit is odd. That means the ten's digit must be twice the one's digit. There are only four two-digit numbers where the ten's digit is twice the one's digit: 21, 42, 63, 84. Check which of these satisfy all the clues.

1346

18. 1+8=9 9x2=18

If the lead digit cannot be zero then there are 9 x 9 x 8 x 7 = 4536 combinations. If the lead digit can be zero then there are, 10 x 9 x 8 x 7 = 5040 combination.

Related questions

804

The units digit of a two digit number exceeds twice the tens digit by 1. Find the number if the sum of its digits is 10.

It is 99,887,765

18 is the only number that matches these criteria.

17

The Answer is 36 btw. 3 + 6 = 9 3 x 6 = 2(3x6) 2(18) = 36

2.3

22621, 44742, 66863, 88984

47 Impossible problem!

36 is twice the product of its digits multiplied. 3 times 6 equals 18, and 18 times 2 equals 36.

The number is 84.Assign the digits in the number the letters a and b.GIVEN: a + b = 12GIVEN: a = 2bSolve for b, then solve for a.2b + b = 123b = 12b = 4a = 2(4) = 8

9218 9425

People also asked

Featured Questions