517 में वह छोटी से छोटी कौन सी संख्या जोड़ी जानी चाहिए ताकि प्राप्त संख्या 15, 25 और 8 से पूर्णतः विभाज्य हो जाए?

What is the smallest natural number that should be added to 9,054 such that a remainder of 6 is left when the resulting number is divided by each of the numbers 28, 24, 56, and 29?

Find a number less than 450, which when divided by 4, 5, 6 and 7, leaves the remainder 2 in each case.