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থিম নির্বাচন

আপনার পছন্দের থিম বেছে নিন।

Mr. Noman is in charge of a special snake farm in Gaibandha. The farm has two types of  snakes; Cobras and Pythons. After a recent stock taking he was surprised to find that   1/4    of the total number of snakes in the number of cobras in the farm was exactly equal to  1/6 of the total number of snakes in the farm. What is the ratio of the number of Pythons to the number of Cobras in the farm? 

A. 1:4
B. 1:3
C. 1:2
D. 2:3
E. cannot be determined 
সঠিক উত্তরঃ C. 1:2
Explanation: