The number of times the digit 3 will be written while listing the integers from 1 to 1000 is

# OPSC (Assistant Section Officer)

## Find the value of …..

Find the value of .

## From 200 litres of 80% concentrated milk, 30 litres is taken out and water is added. The new concent….

From 200 litres of 80% concentrated milk, 30 litres is taken out and water is added. The new concentration of milk in the mixture is

## In the given figure (not drawn to scale), PT = 3QT, where P and Q are the center of the bigger and s….

In the given figure (not drawn to scale), PT = 3QT, where P and Q are the center of the bigger and smaller circles, respectively. What is the measure of P?

## A sum of money in 2 years at compound interest becomes Rs. 3630 and in 3 years it becomes Rs. 3993. ….

A sum of money in 2 years at compound interest becomes Rs. 3630 and in 3 years it becomes Rs. 3993. Find the principal amount.

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## Chattoo, Changoo and Chanchoo own their scrap steel businesses. They keep their prices same. They so….

Chattoo, Changoo and Chanchoo own their scrap steel businesses. They keep their prices same. They sold steel-scrap @ Rs. 0.8 per ton in February and @ Rs. 1.2 per ton in March. Their sales were 20, 25 and 28 metric tons respectively. But their turnovers (i.e., revenues) were the...

## A gold sheet of volume 1/3 m3 is extended by hammering it so as to cover an area of 0.1 hectare. The….

A gold sheet of volume 1/3 m3 is extended by hammering it so as to cover an area of 0.1 hectare. The thickness of the sheet is

## There are 3 bells; A, B and C. A and B ring together once in every 2 minutes and B and C ring togeth….

There are 3 bells; A, B and C. A and B ring together once in every 2 minutes and B and C ring together once in every 3 minutes. If all the three bells ring together at 8.00 a.m. for the first time, at what time will they ring...

## If a two digit number is multiplied by the sum of its digits, the product obtained is 637. If the di….

If a two digit number is multiplied by the sum of its digits, the product obtained is 637. If the digit at the unit’s place is five more than the other one, what is the number?

## A motorboat can travel at 10 km/hr in still water. It travelled 91 km downstream and then returned, ….

A motorboat can travel at 10 km/hr in still water. It travelled 91 km downstream and then returned, taking 20 hours altogether. What is the speed of flow of water in the river?

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