हे गणित UPSC मुख्य परिक्षेतील आहे.फक्त वैभव अगरवाल यानेच सोडवले आहे. सोडवू शकाल?


1 ,3 ,5 ,7 ,9, 11, 13 ,15

यापैकी अंक वापरा
कोणताही अंक कितीही वेळा वापरा




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Odd terms can not give odd sum so it is not possible 
but if we use 3! its possible
here 3!=1*2*3=6
Theres no particular answer for this as three odd nos can never add up to an even no. like 30.
this can only be solved using logic like

(1+3) +11+15=30
1 5 1