Basic Mathematics (KVPY Stream-SA (Class 11) Math): Questions 108 - 112 of 156

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Question number: 108

» Basic Mathematics » Arithmetic » Number Games

MCQ▾

Question

The number of distinct primes dividing 17!+18!+19! is –

Choices

Choice (4) Response

a.

7

b.

6

c.

8

d.

9

Question number: 109

» Basic Mathematics » Arithmetic » Solving Expressions

MCQ▾

Question

If x, y are real number such that 5xy+15xy1=600 , then the value of x+yxy is –

Choices

Choice (4) Response

a.

2

b.

1

c.

0

d.

3

Question number: 110

» Basic Mathematics » Arithmetic » Number Games

MCQ▾

Question

Let n > 1 be an integer. Which of the following sets of numbers necessarily contains a multiple of 5?

Choices

Choice (4) Response

a.

n171,n17+1

b.

n68,n68+1

c.

n17,n681

d.

n68,n681

Question number: 111

» Basic Mathematics » Arithmetic » Rates

MCQ▾

Question

Mahesh and Joseph are working on an assignment. Mahesh takes 8 hours to type 28 pages on a computer, while Joseph takes 4 hours to type 32 pages. How much time will they take, working together on two different computers to type an assignment 69 pages?

Choices

Choice (4) Response

a.

9 hr

b.

9 hr 25 min

c.

8 hr 30 min

d.

10 hr 15 min

Question number: 112

» Basic Mathematics » Arithmetic » Ratio and Proportion

MCQ▾

Question

A bag contains 50 p, 25 p and 10 p coins in the ratio N50:N25:N10=3:8:4 , amounting to Rs. 117. Find the numbers of coins of each type,

Choices

Choice (4) Response

a.

N50=85,N25=250,N10=150

b.

N50=95,N25=300,N10=100

c.

N50=90,N25=240,N10=120

d.

N50=80,N25=220,N10=230

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