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  • SBI Clerk Exam Quantitative Aptitude Study Material

Digitization help student to explore and study their academic courses online, as this gives them flexibility and scheduling their learning at their convenience. Kidsfront has prepared unique course material of Quantitative Aptitude Average for SBI Clerk Exam student. This free online Quantitative Aptitude study material for SBI Clerk Exam will help students in learning and doing practice on Average topic of SBI Clerk Exam Quantitative Aptitude. The study material on Average, help SBI Clerk Exam Quantitative Aptitude students to learn every aspect of Average and prepare themselves for exams by doing online test exercise for Average, as their study progresses in class. Kidsfront provide unique pattern of learning Quantitative Aptitude with free online comprehensive study material and loads of SBI Clerk Exam Quantitative Aptitude Average exercise prepared by the highly professionals team. Students can understand Average concept easily and consolidate their learning by doing practice test on Average regularly till they excel in Quantitative Aptitude Average.


Average
The average of 1, 3, 5, 7, 11, ______ 25 terms is

a) 50
b) 125
c) 25
d) 625



Answer
Solution
Correct Answer Is : 25
Solution Is : Here a = 1, d = 2, n = 25 Tn = a + ( n-1 )d = 1 + ( 25 - 1 ) * 2 = 1 + 24 * 2 = 49 Since, the nth term is 49, So l = 49 Sn = n/2 [ a + l ] = 25/2 [1+49] = 25/2 * 50 = 25 * 25 = 625 Average => 625/25 = 25.
A batsman makes a score of 87 runs in the 17th inning and thus increased his average by 3. Find his average after 17 th inning.

a) 90
b) 87
c) 84
d) 39



Answer
Solution
Correct Answer Is : 39
Solution Is : A batsman makes a score of 87 runs in 17th inning and his average increases by 3. Score of batsman before 17th inning = x Score of batsman after 17th inning = x + 87 = x + 87/17 - x/16 = 3 16 ( x+87) - 17x = 3*16*17 16x + 87 * 16 - 17x = 3 * 16 * 17, 87 * 16 - 3 * 16 * 17 = x 16 ( 87 - 51 ) = x, x = 16 * 36 = 576 Now, average after 17th inning =663/17 = 39.
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