1.
In the following number series only one number is wrong. Find the wrong number.130 129 154 203 284 405
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By: anil on 05 May 2019 01.36 am
In this question we can see that 154 - 129 = 25 = $$(5)^2$$ 203 - 154 = 49 = $$(7)^2$$ 284 - 203 = 81 = $$(9)^2$$ 405 - 284 = 121 = $$(11)^2$$ but when we see the first two terms from left side 129 -130 = 1 and hence we can say that the odd term is 130 as it should be 120 hence correct answer is A
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