## How many for a rupee must he sell to gain 20%?

A vendor bought toffees at 6 for a rupee. How many for a rupee must he sell to gain 20%?

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## What is Anand’s present age in years?

Present ages of Sameer and Anand are in the ratio of 5 : 4 respectively. Three years hence, the ratio of their ages will become 11 : 9 respectively....

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## What is the age of the youngest child?

The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?

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## what is the width of the road?

A rectangular park 60 m long and 40 m wide has two concrete crossroads running in the middle of the park and rest of the park has been used...

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## Batman Score

A batsman scored 110 runs which included 3 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets?

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## competitive2

What is the least number which must be subtracted from 7147 to make it a perfect square?

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## competitive

A number is such that when divided by 3, 5, 6 or 7 it leaves the remainder 1,3,4 or 5 resp. Which is the largest number below 4000 that...

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## Find area of shaded region:

In above diagram, ABCD ia a rectangle with area . The area of circle with center O is . What is the area of the shaded region?

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## Opamp output

Input v/g is 3mV. Resistor values are 10 k-ohm and 2 k-ohm. Calculate the output v/g and draw the waveforms.

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## Find the Seven Numbers

There are seven numbers, A, B, C, D, E, F, and G. When all these numbers except A are added together, 116 is obtained. When all these numbers except...

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## What is value of angle A?

Given, Triangle XY = XC , AB || XY and angle XCD = 30 degree. Find value of angle BAC.

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## Probability of heads-tails

A person was asked to toss a coin ten times. He did first two toss and get head both the times. What is the probability that he get head...

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## Relative speed

two cars crossing each other at 50 kmph and 20 kmph as shown above? what is the relative speed when they cross each other?

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## Probability mass func

The probability mass function (PMF) of a variate X is given in the table. Find mean and varience.

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## Length of ladder

The ladder is rested on the wall making an angle 60° with the horizontal. If the bottom of the ladder is 25 meters away from the ladder, find the...

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## Multiple choice

Which of the following cannot be an integer if the integer k is a multiple of 12 and a multiple of 9. (a) K/3 (b) K/4 (c) K/10 (d)...

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## Probability

How many times a man must toss a coin, so that the probability of having at least one head is more than 80% ?

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