allery3, 8, 13, __, 23, 28 ରେ କେଉଁ ସଂଖ୍ୟାଟି ଖାଲି ସ୍ଥାନ ପୂରଣ କରେ?
A17
B19
C20
D18
Answer & Solution
Correct answer: D. 18
ପ୍ରତ୍ୟେକ ପଦ 5 ଲେଖାଏଁ ବୃଦ୍ଧି ପାଉଛି, ତେଣୁ 13 ପରବର୍ତ୍ତୀ ପଦଟି ହେଉଛି 13 + 5 = 18।
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