Question

1,3,5,7,9,11,13,15the sum of any five numbers
above should equals 30.The numbers can be
repeated.what is the number??????????
PLEASE HELP............

Answer 1

Write 9 five times and turn the paper upside down

Answer 2

It is possible if we use the factorial method,
3!+1+3+13+7=30   [ 3! = 3×2×1=6 ]

But without factorial,
Odd nos added for even no of times gives a EVEN NUMBER.
odd nos added for odd no of times gives a ODD NUMBER hence, it isnt possible.