DE-Shaw Aptitude Quiz-SK-1

What is the least number which, when divided by 5, 6, 7, 8 gives the remainder 3 but is divisible by 9?

• 1793

• 1683

• 1573

• 1463

If the radius of a circle is increased by 50%, its area is increased by what percentage?

• 50%

• 75%

• 100%

• 125%

Three numbers are in the ratio 3:4:5. The sum of the largest and the smallest equals the sum of the second and 52. What is the smallest number?

• 20

• 27

• 39

• 52

In a family, the average age of a father and a mother is 35 years. What is the age of their only son if the average age of the father, mother, and son is 27 years?

• 12 years

• 10 years

• 11 years

• 10.5 years

If 5 men or 7 women can earn Rs. 5,250 per day, how much would 7 men and 13 women earn per day?

• Rs. 16,100

• Rs. 11,700

• Rs. 11,600

• Rs. 17,100

A and B working separately can do a piece of work in 9 and 12 days respectively. If they work for a day alternately with A beginning, how many days would the work be completed in?

• 10 1/3 days

• 10 1/2 days

• 10 1/4 days

• 10 2/3 days

By walking at 3/4 of his usual speed, a man reaches his office 20 minutes later than his usual time. What is the usual time taken by him to reach his office?

• 30 minutes

• 40 minutes

• 60 minutes

• 75 minutes

The HCF and LCM of two numbers are 12 and 924 respectively. How many such pairs exist?

• 3

• 2

• 1

• 0

4.41 * 0.16 / 2.1 * 1.6 * 0.21 is simplified to what?

• 1

• 10

• 0.1

• 0.01

If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work?

• 60

• 30

• 45

• 40