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Arithmetic

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by narik11 » Wed Oct 06, 2010 10:00 am
danjuma wrote:What is the 51st term in the sequence 5,9,13, 17, 21, 25.....

a.205 b.203 c. 207 d. 209 e.211
Its in A.P

nth term= a+(n-1)d
=>5+(51-1)4=>205
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by saurabhmahajan » Thu Oct 07, 2010 2:18 am
the sequence shows that every term is result of nd+1

where n= #th of element
d= difference between two elements

for e.g... what is the 4th element, then 4(n) * 4(d) + 1 = 17

same way 51 element is 51*4+1 = 205
Thanks and regards,
Saurabh Mahajan

I can understand you not winning,but i will not forgive you for not trying.
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