Pi-Thon: Mathematical Relay Race

The sum of three consecutive multiples of 7 is 273 . Find the largest number.

• 98

• 91

• 84

• 105

What is the difference between the greatest and smallest three digit numbers that can be formed using the digits 0, 1, 7 and 9 without repetitions?

• 863

• 866

• 850

• 864

The price of an item is reduced by 40%. As a result, customers can get 4 kg more of it for ₹420. Find the original price (in ₹) per kg of the item.

• ₹70

• ₹45

• ₹75

• ₹60

If cos X = a/b, then sin X is equal to:

• (b²-a²)/b

• (b-a)/b

• √(b²-a²)/b

• √(b-a)/b

A bag has 5 white marbles, 8 red marbles and 4 purple marbles. If we take a marble randomly, then what is the probability of not getting purple marble?

• 0.5

• 0.66

• 0.08

• 0.77

Find the number of zeroes in 10×20×30...×1000.

• 100

• 124

• 120

• 150

Sunita multiplies a number by 3 instead of dividing the number by 3. Resultant number is what percentage of the correct value?

• 600

• 900

• 1200

• 1500

In a class of 120 students, 60 students passed in Mathematics and 90 passed in English, 10 students failed in both Mathematics and English. How many students passed in both the subjects?

• 40

• 35

• 50

• 45

An ant climbs a 14 cm high slippery pillar. In his first minute, he climbs 2 cm and in the next minute, he slips 1 cm down. In this way, how much time will he take to reach the top of the pillar?

• 30

• 24

• 25

• 35

Which term of the A.P. 3,7,11,15,… is 83?

• 20th

• 21st

• 22nd

• 23rd