self Maths Puzzle

All of the numerals in a number are different than each other. For all the neighboring numeral pairs in this number, the number formed by these neighboring numerals or its consecutive is a prime number. What is the largest number satisfying these conditions?

Example: 1029 Pairs: 10 (11 is prime); 02 (both 2 and 3 are primes) and 29 (29 is prime).
Note: For the number x, its consecutive is x+1.

Read Solution (Total 1)

self Other Question
Mr. X while buying cloth uses a faulty meter tape which actually measures 110 cm and while selling cloth, he uses a faulty meter tape which actually measures 90 cm. If he buys the cloth at a discount of 5% on the marked price and sells it on a discount of 10% on the same marked price, then what is his percentage gain or loss?
15.8% profit
4.21% loss
5% loss
25% profit
None of these Use all the nine numerals from 1 to 9 once and form four numbers (A, B, C, D) such that divisions A/B and C/D produce different but closest results. (ie. Absolute value of A/B-C/D should be minimum.)


Example: If the numbers were 12/789, 6/345, your answer should read 6,12,345,789

Give value of A,B,C,D