If A={1,2,3,4,5,6,7,8,9,10} and B={-2,-1} then find A minus B
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Answer:
A minus B will be A itself
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Answer:
45
Step-by-step explanation:
Number of elements in A=10
Number of subsets of A containing exactly two elements
= Number of ways we can select 2 elements from 10 elements
10
C 2 = 10 × 9 = 45
2
∴ Number of subsets of A containing exactly two elements =45
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