What is the least six digit number in which the thousands place is twice the digit in the tens place?

Question

What is the least six digit number in which the thousands place is twice the digit in the tens place?

Answer 1

120010

Answer 2

100000

Answer 3

100001

Answer 4

998949

Answer 5

Try to fill all the places by zeros keeping in view ---

(1) Here tenth place cannot be a zero, the next least digit is 1. Which is acceptable.

(2) According to the question, at the thousandth place we must keep 2.

(3) First place at the right hand cannot be zero ; since then the number will reduce to

a 5-digited number.Hence keep it the next least number ( ie 1 ).

Fill all other places by zero. So we get the required number. ---

It is 1 0 2 0 1 0 ........................................... Answer

Dr. PKT

Answer 6

you would have to put 2010 to make it a real number.