Prime number is a whole number that has no possible divisors that 1 and itself. Prime numbers are 2, 3, 5.7.11,13,17,19,23 and 29. From 1 to 10 there are 3 prime numbers: 3,5 and 7. The probability can be calculated as the ratio between the number of "good" events and the total number of possible events. There are three "good" events (3,5 or 7) and 10 total events, so the probability that the spinner lands on a prime number is: 3/10. So, none of the given options is true.
17% of 400 is 68. Another way u can do it is 17% of 100 four times since its easier to do. 17% of 100 is 17. we have to do this 4 times since 100 goes into 400 four times. So 17*4 =68
