Question

answer plz this is important​

Answer 1

Step-by-step explanation:

G= 23

D= 8

GnD= 5

given

no. of total students = 40

G = 28

D = 13

4 do not wear glasses nor diving lences

So..

G = 23

D = 8

GnH = 5

and 4 do not wear glasses nor diving glasses

Sum of all the nos. = G + H + GnH + 4

= 23+8+5+4

= 40

Hope it helped u.. ❤️