CBSE - Aptitude Mathematics

If by selling 110 mangoes, the cost price of 120 mangoes is realized, the gain percent is 1. 11 1/9% 2. 9 1/9% 3. 10 10/11% 4. 9 1/11%

The C.I. on a certain sum of money is Rs.4080 and the S.I. is 4000. If the time, involved is 2 years, find the rate % p.a. 1. 3 1/3% 2. 6 1/4% 3. 4% 4. none of these

Which of the following numbers is the largest? 1. 1/.05 2. 1/(.5) 3. 1/.5 4. 5

The marks of ten candidates in an examination were as follows 47,43,38,37,33,30,29,25,20,18. If assumed mean be 30, then standard deviation is 1.10 marks 2.8 marks 3.6 marks 4.9 marks

If a is a non-zero column matrix of the type n x 1 and B a non-zero row matrix of the type 1 x n, then P(AB) is: 1. 0 2. 1 3. n 4. None of these