Question

11×11-10×10 solve in short cut​

Answer 1

Answer:

121-100

=21

which is the required ans

Answer 2

Answer:

21

Step-by-step explanation:

it can be solved in short cut as

11*11-10*10=11^2-10^2

now, the property states that

a^2-b^2=(a+b)(a-b)

11^2-10^2=(11+10)(11-10)=(21)(1)=21

so 21 is the answer

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