2 Replied

2 Replied

1 Replied

## 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%?
1 Replied

## 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....
3 Replied

## 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?
2 Replied

## 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...
1 Replied

## 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?
3 Replied

## Find remender

Select Answer (a) 1 (b) 61 (c) 41 (d) 21
2 Replied

Solve:
1 Replied

## competitive2

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

## 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...
4 Replied

## Simultaneous eqn

Solve the given simultaneous equations to find value of x and y .
2 Replied

## contest find the largest

which one is bigger? (a) 7/11 (b) 8/12 (c) 9/13
2 Replied

## solve

solve the differential equation.
3 Replied

## Complex numbers

Prove, using De Moivre’s theorem.
1 Replied

## Correlation

Given are two regression lines. Determine the coefficient of correlation.
1 Replied

## Value of X

In the fig. ABCD is a square. Value of angle X is :
1 Replied

Solve:
1 Replied

## Matrices

Find the value of K , so that Matrix A has no Inverse .
1 Replied

## 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?
1 Replied

## Simplify:

sin^-1(sqrt{2}/2)+ cos^-1(1/sqrt{2})+ tan^-1(1)
1 Replied

## 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.
2 Replied

Type here
2 Replied

Type here
1 Replied

## 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...
1 Replied

## What is the angle measure of AEF?

ABCD is a square. What is the angle measure of AEF?
2 Replied

## Zener Diodes!

How is Zener diods different than normal diods?
2 Replied

## What is value of angle A?

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

## Signals

Determine whether the given system is : (i) Linear (ii) Time invarient
3 Replied

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...
1 Replied

Type here
2 Replied

## 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?
6 Replied

## Probability mass func

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

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...
2 Replied

## Convolution

Find the value of y where y= x (t) * h (t)
1 Replied

## 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)...
1 Replied

## What is next in this arithmetic sequence?

10A – 1 10A +1 10A + 2 10A – 2
1 Replied

## Prove

Prove the above for
3 Replied

## Probability

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