Page 40 - Mathematics Class - X

MCQs

1. In an AP, if a = 3.5, d = 0, n = 101, then T will be
n
a) 0 b) 3.5 c) 103.5 d) 104.5
− 5 5
2. The 11th term of the AP: 5,− , 0, , ...is
2 2

a) –20 b) 20 c) – 30 d) 30
3. If the 2 term of an AP is 13 and the 5 term is 25, what is its 7 term?
th
th
nd
a) 30 b) 33 c) 37 d) 38
4. Which term of the AP: 21, 42, 63, 84,... is 210?

a) 9 b) 10 c) 11 d) 12 th
th
th
th
5. The famous mathematician associated with finding the sum of the first 100 natural numbers is
a) Pythagoras b) Newton c) Gauss d) Euclid

Answers: 1. b) 3.5 2. b) 20 3. b) 33

4. b) 10 5. c) Gauss
th

Case-Study Based Questions
Case-Study Based Questions
Everybody wants to celebrate his/her birthday. Reshu is
celebrating her birthday party. She invited her friends on
this occasion. She arranged a number card game. In this
game, number cards are distributed among her friends
such that they are following an arithmetic progression.
Reshu made sure that each of her friends who stood
in a row gets a card. The first three cards marked
2x, x + 10 and 3x + 2 are given to Azhar, Rani and
Sanjay respectively.
Based upon the above information, answer the questions given below:

1. Rani is a curious child, she wants to find the sum of the number cards obtained by her, Azhar and
Sanjay.

2. Reshu has called only a few numbers of her closed friends in this party. Dhruv is her friend who gets the
last card with the number 56. If so, find how many of Reshu’s friends are attending the birthday party.

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