Find the sum of all integers of 3 digits that are divisible by 7.
If 20 is divided into 4 parts that are in AP such that the product of first & fourth is to the product of 2nd & 3rd is 2:3, find the largest part.
If a clock strikes once at one o'clock, twice at 2 o'clock and twelve times at 12 o'clock and again once at one o'clock and so on, how many times will the bell be struck in the course of four days?
The first & last term of an AP are 107 & 253. If there are five terms in this sequence, find the sum of the sequence.
Find the second term of an AP if the sum of its first 5 terms is equal to 15 & the sum of the first three terms is equal to -3.
Four numbers are inserted between the numbers 4 & 39 such that an AP results. Find the biggest of these four numbers.