Mathematics Tes...

Monica's average expenses for 4 days is Rs 6.0. She spent Rs 7.70 on first day, Rs 6.30 on second day. If she spent 10 on third day , How much did she spend on the 4th day?

In a single throw of two dice, find the probability of the first dice always occur odd number and sum of two dice is greater than 5.

The ratio of the two numbers is 5 : 7 and their LCM is 105. If X is the ratio of the sum of the numbers and the difference of the numbers. What is the value of X?

For a positive integer n, if the mean of the binomial coefficient in the expansion of 

(a + b)^{2n – 3} is 16, then n is equal to-

If the system of linear equations :

x+ 3y +7z = 0

-x + 4y +7z = 0

(sin3θ)x+ (cos2 θ)y +2z = 0 has a non-trivial solution, then the number of values of θ lying in the interval [0, π], is-

The number of integral values of m for which the equation, (1 + m2) x2 – 2(1 + 3m) x + (1 + 8m) = 0, has no real root, is:

A man spends Rs 1,800 per month on an average for the first four mouths and Rs 2,000 per month for the nest 8 months and saves Rs 5,600 a year. What is his average monthly income ?

Six bells commencing tolling together toll at intervals of 2, 4, 6, 8,10 and 12 seconds respectively.In 30 minutes how many times do they toll together?

The average of 5 numbers is 9 and the average of the last three numbers is 5.Find the average of the first two numbers.