The number of handshakes that will occur in a group of eighteen people if each person shakes hands once with each other person in the group is 153 handshakes
In order to determine the number of handshakes that will occur among 18 people, that is, the number of ways we can choose 2 persons from 18 people.
∴ The number of handshakes = 






∴ The number of handshakes = 153 handshakes
Hence. 153 handshakes will occur in a group of eighteen people if each person shakes hands once with each other person in the group.
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Answer: how much does an exam cost XD?
Step-by-step explanation:
Answer:
x = 63
Step-by-step explanation:
<u>Step 1: Solve for x by multiplying both sides by 9</u>
x/9 * 9 = 7 * 9
<em>x = 63</em>
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Answer: x = 63
It could be 5000 and 2, because 2 is a single digit and the product equals 10000.
What do you mean put in standard form?