Question

If A = {x : x is a letter of the word ‘HYDERABAD’}, B = {x : x is a letter of the word ‘ALLAHABAD’}, then n(A∩B) is equal to: ​

Answer 1

Answer:

I hope it helps

Step-by-step explanation:

A=HYDERABAD

B=ALLAHABAD

then answer is

first you have to take all letter one time

So,A=H,Y,D,E,R,A,B

B=A,L,H,B,D

so final answer is {H,B,A,D}

Answer 2

Answer:

7

it is correct answer

so why it is wrong