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1)A two-figure number is written down at random

Question:

1)A two-figure number is written down at random. Find the probability that
a)the number is greater than 44
b)the number is less than 100
2)A letter is picked at random from the english alphabet. Find the probability that
a)the letter is a vowel (my answer=5/26)
b)the letter comes in the first half of the alphabet (my answer=13/26)
c)the letter is one that appears in the word PROBABILITY
3)A letter is chosen at random from the letters of the word SUCCESSION. What is the probability that the letter is (a)N (b)S (c)vowel (d) not S
Please help

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