Question
How many such pairs of letters are there in the words
‘COMPLIMENTS’ each of which has as many letters between them in words (both in backward and forward direction) as they have between them in the English alphabetical series?Solution
OL, MT, PM and TS.
5 years ago, A was 1/3 of B’s age. If the ratio of their present ages is 2:5, what will be the sum of their present ages?
The arithmetic means of the following data is.23,17,20,19,21,20,20
If p = q + 2, where q is the product of six consecutive positive integers, then which of the following is/are true? Â
a. p is a perfect cube
The average weight of a class of 25 student is 60 KG. If X is student joined the class,  than the average weight of whole class increases by (2X – 7...
The sum of first 'n' natural numbers is 465. Find 'n'.
In an arithmetic progression, the 4th term is 23 and the 9th term is 48. What is the sum of the first 20 terms?
The data given below shows the marks obtained by 12 different students in an exam.
Marks obtained: 18, 22, 25, 28, 35, 39, 47, 50, 50, 64, 65, 85...
Pipe ‘A’ and pipe ‘B’ can fill a cistern in 20 minutes and 15 minutes respectively. Pipe ‘C’ alone can empty the cistern in 12 minutes. If a...
Find the sum of 12th terms of a geometric progression whose 1st term is 8 and common ratio is 2.
21 is divided into three parts which are in arithmetic progression (A.P.) in such a way that the sum of their square is 179. Find the smallest part.
Relevant for Exams:
