Question

in group of 60 students, 15 liked math only , 20 liked science only and 5 did not like any two subject how many student like math

Answer 1

35 kids.

Explanation:

55 kids who like math or science

15 math only and 20 science only

s0 20 who like both math and science

so 35 kids who like math

Answer 2

i) no. of students like none of subject = 5

total no. of students= 69

=> no. of students like at least one subject= 60-5

= 55

ii) no. of students like math only = 15

no. of students like science only = 20

total no. of students like only one subject= 35

no. of students like none subject = 5

=> no of students like both the subjects = 60-(35+5) =20

(iii) no. of students like math= 15+ 20

= 35 ( because 15 like math only and 20 like both)

(iv) no. of students like science= 20+20

= 40 ( because 20 like science only and 20 like both )

Explanation: