(2) Find the sum of all even numbers between 1 and 150.
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5700 is the answer
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AP formed = 2,4,6,8........146,148
first term(a) = 2
last term = 148
common difference = 2
[tex]a_{n} = a + (n - 1)d \\ 148 = 2 + (n - 1)2 \\ 146 = 2(n - 1) \\ 73 = n - 1 \\ n = 74 \\s = n/2(a+l)\\
s=74/2(2+147)\\s=5550
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first term(a) = 2
last term = 148
common difference = 2
[tex]a_{n} = a + (n - 1)d \\ 148 = 2 + (n - 1)2 \\ 146 = 2(n - 1) \\ 73 = n - 1 \\ n = 74 \\s = n/2(a+l)\\
s=74/2(2+147)\\s=5550
please follow me
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