alleryଏକ ବାକ୍ସର କଲମର 3/5, ତାପରେ ଅବଶିଷ୍ଟର 1/4 ବାଦ ଦିଆଯାଏ; 6ଟି ଯୋଗ କଲେ ପ୍ରାରମ୍ଭିକ ସଂଖ୍ୟାର ଅଧା ହୁଏ। ପ୍ରାରମ୍ଭିକ ସଂଖ୍ୟା କେତେ?
A36
B24
C30
D40
Answer & Solution
Correct answer: C. 30
ଉଭୟ ଅପସାରଣ ପରେ କଲମର 3/10 ରହିଥାଏ, ତେଣୁ 6 ଟି କଲମ ପ୍ରାରମ୍ଭିକ ଗଣନର 1/2 - 3/10 = 1/5 ସମାନ, ଯାହା 30 ଥିଲା |
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