Solve it using Principle of mathematical induction .
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hello......
✔️With n+1 people, the number of handshakes is the sum of the first n consecutive numbers: 1+2+3+ ... + n.
✔️Since this sum is n(n+1)/2, we need to solve the equation n(n+1)/2 = 66.
✔️This is the quadratic equation n2+ n -132 = 0.
✔️ Solve for n =11 as the answer....
thank you..
✔️With n+1 people, the number of handshakes is the sum of the first n consecutive numbers: 1+2+3+ ... + n.
✔️Since this sum is n(n+1)/2, we need to solve the equation n(n+1)/2 = 66.
✔️This is the quadratic equation n2+ n -132 = 0.
✔️ Solve for n =11 as the answer....
thank you..
Dreamer25:
Amazing one....
U have given nearly 1200 answers.... oh god
thanks;)
☺️
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