A job is finished by 7 people in 15 days. Same job can be finished by 5 people in how many days?

Numbers 4,6,8, are given. Using these numbers how many 3 digit numbers can be constructed without repeating the digits :

Next term of the sequence 1,4,9,16,25,.........is :

Find the smallest number which is divisible by 9,18 and 24 :

which is the value not equal to 1.125 ?

In the following option, the number which is not a perfect square is :