Question in attachment.
Please answer ASAP.
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Step-by-step explanation:
let a be group of hindi people
let b be group of Bengali people
total no. of people 1000
group a=750
group b=400
total people=group a+group b- both speak Hindi and Bengali
1000=750+400-both people
1000=1150-both people
both people =1150-1000=150
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