If the five-digit number abcde is divisible by 6, then which of the following numbers is NOT necessarily divisible by 6?
Question and options
If the five-digit number abcde is divisible by 6, then which of the following numbers is NOT necessarily divisible by 6?
- edcba
- eee
- bbadcacede
- cdbae
Answer and explanation
Correct answer: A - edcba
abcde divisible by 6 means e even and digit sum divisible by 3. eee, bbadcacede (sum 2(a+b+c+d+e)) and cdbae all end in e with digit sum a multiple of 3, so divisible by 6. edcba ends in a, which need not be even.
Practice for these exams
-
IPMAT Indore
Related question papers
Related exam syllabi
More solved explanations in Arithmetic
- A sphere is exactly fit in a cube. The ratio of volume of cube and sphere is:
- Pipe X can fill a tank in 12 hours and pipe Y can empty the tank in 18 hours. Both pipes are opened at 8 am; after some time Y is closed, and the tank is full at…
- If 5 boys and 3 girls sit randomly around a circular table, the probability that there will be at least one boy sitting between any two girls is
- Ratio between officers and soldiers was 3 : 31 in a city. 6 officers and 22 soldiers were killed in a war and ratio became 1 : 13. Initially number of officers was…
- By selling 33 m of cloth, P gained the selling price of 11 m. The percentage gain is