If the sum of 11 consecutive odd numbers is 253 find the first term
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Answer:
13 (First term)
Step-by-step explanation:
S₁₁ = 253
=> (11/2)(a+l) = 253
=> a+l =253(2/11)
=> a+l = 23*2 =46
=> a+l = 46 ---------------- i
=> a + a+(11-1)2 = 46
=> 2a+20=46
=> 2a=46-20
=>a = 26/2 = 13
=> a=13
therefore
by i =>
a+l = 46
13+l=46
l = 46-13 = 33
l=33
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