X=3+8+15+24+..+195 , then what is the sum of prime factors of x?
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Answer:
4020
Step-by-step explanation:
a = 3, d=5 an = 195 sn = ?
sn = n/2 (2a + (n-1)d) 195 = a + (n-1)d
= 20 (6 + 200 - 5) 195 = 3 + (n-1)5
= 20 (6 + 195) 192 = 5n - 5
= 20 (201) 200/5 = n
= 4020 n = 40
THEREFORE, THE SUM OF PRIME FACTORS OF X IS 4020
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