Question

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Answer 1

Answer:

4) 21 "Namaste"

5) a is greater.

Step-by-step explanation:

4) We know that the total number of persons is 7 , so every person shakes hands with 6 persons.

It then means that, there are 7x6=42 handshakes.

But by every handshake two persons are involved.

Therefore, 42 is the result of double-counting,

which gives 42/2 = 21 handshakes.

5)  We can see that every number in a is greater than corresponding number in b,

hence, a>b

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