aptitude

Question

let a1,a2,a3...........a10 be integers such that 0<a1<a2<a3................<a10 if S=a1+a2+a3 +........+a10 then

110<= S<= 55

110<=S

55<=S

55<=S<=110

Comments

S>=55...it has no upper bound and can go till infinity...

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Since $0 < a_1 < a_2 < a_3 < ... < a_{10}$, all the 10 integers are unique. What is the minimum possible sum of 10 unique positive integers?

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1 to 10

55

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110<= S<= 55

this line is a mistake

Answer 1

According to question ,  we can let 0<a1<a2<a3................<a10 

suppose , let integer      1, 2, 3,4,5,6,7,8,9,10 

S_min  = 1+2+3+.........+10 = 55

Thus, we can say that S should  be greater than equal to 55. 

S > = 55     Ans