exam Maths Puzzle Numerical Ability

what is the units digit in the exression:
(15+sqrt220)^19+(15+sqrt220)^82

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exam Other Question

at the start of the new school yearr,southern high school had 45 more students than the previous year. this was a new record high of 875 students. how many students attended southern high school the previous year Find the probability that the name of a month of the year, chosen at random, begins with a consonant.