Question

SECTION - A
Section A consists of 20 questions of 1 mark each. Any 16 questions are to be attempted
1. The ratio of LCM and HCF of the least composite and the least prime numbers is
(A) 1:2
1
(B) 2:1
(C) 1:1
(D) 1:3
2 The value of k for which the lines 5x+7y=3 and 15x + 21y = k coincide is
1
(A) 9
(B) 5
(D) 18
3.- A girl walks 200m towards East and then 150m towards North. The distance of the girl from the starting
point is
1
(A) 350m
(B) 250m
(D) 225m
(C) 300m
4. The lengths of the diagonals of a rhombus are 24cm and 32cm, then the length of the altitude of the
Thombus is
(AL 12cm
(C) 19 cm
1
(B) 12.8cm
(D) 19.2cm​

Answer 1

Q 3

option a is correct

200m+ 150m = 350m

Answer 2

1. least composite number is 4 and the least prime no. is 2

so,

LCM(4,2) : HCF (4,2) =4:2 =2:1

So option b

is correct answer