alleryଜଳସ୍ତର ପ୍ରତିଦିନ 100, 90, 80, 70 cm ହ୍ରାସ ପାଉଛି। ପରବର୍ତ୍ତୀ ସ୍ତରର ଆକଳନ କରନ୍ତୁ।
A60
B65
C50
D40
Answer & Solution
Correct answer: A. 60
ଏହି ଶ୍ରେଣୀଟି ପ୍ରତ୍ୟେକ ପଦକ୍ଷେପରେ 10 ହ୍ରାସ ପାଉଛି, ତେଣୁ 70 - 10 = 60।
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