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

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 )

Step-by-step explanation:

35 kids.

Step-by-step 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  

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.