alleryନିମ୍ନଲିଖିତ ମଧ୍ୟରୁ କେଉଁ ସଂଖ୍ୟାଟି ଏକ ପୂର୍ଣ୍ଣ ଘନ ନୁହେଁ?
A64
B243
C216
D1728
Answer & Solution
Correct answer: B. 243
1. 64 = 4³, 216 = 6³ ଏବଂ 1728 = 12³, ଏ ସମସ୍ତ ପୂର୍ଣ୍ଣ ଘନ ଅଟନ୍ତି।
2. 243 ପାଇଁ ଲକ୍ଷ୍ୟ କରନ୍ତୁ, 6³ = 216 ଏବଂ 7³ = 343, ତେଣୁ 243 ଦୁଇଟି କ୍ରମିକ ଘନ ସଂଖ୍ୟା ମଧ୍ୟରେ ରହିଛି।
3. ଅତଏବ 243 ଏକ ପୂର୍ଣ୍ଣ ଘନ ନୁହେଁ (ଏହା ପ୍ରକୃତରେ 3⁵)।
_Source: RRB Group D (RRC) PYQ, held 27-10-2013, Q.40._
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