Q 28 : A new school has built lockers for its students. All the digits from 0 to 9, together with the letters A to Y, have been used to identify the lockers. Only 4 digits have been used to
identify the lockers with the letter Z. How many lockers have been built in this school, if each
locker is identified by one letter and one digit?

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation:

just sum

10 + 10 = 20

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %

what am i looking for finish the question.

step-by-step explanation: