self Maths Puzzle

The mean salary in ICM ltd. was Rs 1500, and the standard deviation was Rs 400. A year later each employee got a Rs 100 raise. After another year each employee's salary (including the above mentioned raise) was increased by 20%. The standard deviation of the current salary is?

Read Solution (Total 0)

self Other Question

If x3−6x2+px+q is exactly divisible by x2−3x+2, then:

A.

p+q > 0 and pq > 0

B.

p+q > 0 and pq < 0

C.

p+q < 0 and pq < 0

D.

p+q < 0 and pq > 0
Three persons Suresh, Devesh and Prashant were born on different days in the same year. If the date and month of birth of Suresh, Devesh and Prashant are numerically equal, then what could be the minimum difference in the ages of youngest and oldest in days?