# Datagrokr Interview Questions

###### The average of 6 numbers is 10. If each of these numbers is divided by 2 and then 1 is subtracted from each of these resultant numbers, then find the new average? A. 2 B. 3 C. 4 D. 5
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###### The number of non-zero rows in an echlon form is called ? A. rank of a matrix B. cofactor of the matrix C. reduced echlon form D. conjugate of the matrix
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###### Find the average of all even No’s up to 100 or average of first 50 even No’s. A. 51 B. 47 C. 43 D. 42
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###### The age of father 10 years ago was thrice the age of his son. Ten years hence, father’s age was five times the age of the son. After 6 years, son’s age will be: A. 7 : 3 B. 3 : 7 C. 7 : 4 D. 4 : 7
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###### Evaluate: √0.4225 A. 0.64 B. 0.65 C. 0.66 D. 0.67
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###### What is the probability that a leap year has 53 Sundays and 52 Mondays? A. 1/3 B. 1/5 C. 1/7 D. 1/9
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###### A hemisphere and a cone have equal bases. If their heights are also equal, then the ratio of their curved surfaces will be : A. √2 : 1 B. √4 : 1 C. √3 : 1 D. √5 : 1
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###### The ratio between the perimeter and the breadth of a rectangle is 5 : 1 . If the area of the rectangle is 216 sq.cm. . what is the length of the rectangle ? A. 18 cm B. 19 cm C. 20 cm D. 21 cm
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###### Find the annual income derived by investing Rs. 7800 in 10% stock at 136. A. 573.53 B. 570 C. 575 D. 580
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