Programming interview questions multiplication

Create 24 using Addition Subtraction Multiplication and Division from 3 3 8 8

http://digitalpbk.com/interview-questions/create-24-using-addition-subtraction-multiplication-and-division-3-3-8-8 Create 24 using Addition Subtraction Multiplication and Division from 3 3 8 8 None 8 / (3 - 8 / 3) = 24 Interview Questions ...

MMXI in Google Logo

http://digitalpbk.com/interview-questions/mmxi-google-logo-mmxl MMXI in Google Logo None I = 1 V = 5 X = 10 L = 50 C = 100 D = 500 M = 1000 It's not L... That letter is I M + M + X + I = 1000 + 1000 + 10 + 1 MMXI = 2011 Interview Questions ...

Divide A Triange into a 5 triangle of equal Area.

http://digitalpbk.com/interview-questions/divide-triange-5-triangle-equal-area Divide A Triange into a 5 triangle of equal Area. None The answer is pretty simple and straight forward. Area of a triangle is 1/2 x (base) x (height). So divide the base into 5 segments and join the segment end points to the vertex opposite to the base. Area of the triangles now is 1/2 x (base/5) x (height) = Area of the original triangle / 5. Interview Questions ...

Select second largest value in a column using SQL

http://digitalpbk.com/interview-questions/select-second-largest-value-column-using-sql Select second largest value in a column using SQL None The answer is pretty simple without jumping over hoops or thinking about taking MAX etc. SELECT value FROM table ORDER BY value DESC LIMIT 1,1 Why LIMIT 1,1 ? Shouldnt it be 2,1 Think again. LIMIT 0,1 is the first record. Interview Questions ...

Sum of digits of 1999^1999 Recursively reduced to 1 digit

http://digitalpbk.com/interview-questions/sum-digits-19991999 Sum of digits of 1999^1999 Recursively reduced to 1 digit None Answer: 1 1999^1999 = A pretty big number, so calculating this and doing is not the way. 1999 = 1998 + 1 Now all numbers with (9k+1)^n = 9M+1 Therefore 1999^1999 = 9M+1 Sum of all digits of 9M recursively would be 9 9+1 = 10 on further reduction Sum = 1 Courtesy: Meenakshi :) Interview Questions ...

Jar of Oranges Apple and Mix of oranges and apple

http://digitalpbk.com/interview-questions/jar-oranges-apple-and-mix-oranges-and-apple combination 2. :) Interview Questions ...

Reminder after dividing factorial 1! + 2! + 3! + ? + 100! By 7?

http://digitalpbk.com/interview-questions/reminder-after-dividing-1-factorial-2-3-100-7 Reminder after dividing factorial 1! + 2! + 3! + ? + 100! By 7? None (a + b + c + d + .... x ) / 7 = a/7 + b/7 + c/7 + .... x / 7 Therefore 1!+2!+..100! / 7 = 1!/7 + .. 7!/7 + ..100! / 7 Reminder of (a+b)/7 = Reminder(Reminder (a/7) + Reminder (b/7)) / 7 Since Reminder of all numbers from 7! to 100! are 0 , Reminder of 1!+..100! is 1!+2!+3!+..6! = 1 + 2 + 6 + 24 + 120 + 720 = 873 Reminder of 873 divided by 7 is 5 Hence Answer : 5 Interview Questions ...

Combinations to Reach Nth Stair by moving up one step or two step at a time.

http://digitalpbk.com/interview-questions/stairs-one-step-two-step-total-combination sequence is the total Number of combination, if the sequence starts from 0 as shown below. F(0) = 0 F(1) = 1 F(2) = 1 F(3) = 2 etc... Interview Questions ...

Measure 30 Minutes and 15 minutes with a 20 Minute Candle

http://digitalpbk.com/interview-questions/candle-measure-time-30-minutes-15-min-20-long lit candle. Now light the second end of that candle and it would burn for 5 minutes. Hence we can measure a total time of 15 minutes. Interview Questions ...

Find the number of zero's in 'Factorial of a number' N factorial

http://digitalpbk.com/interview-questions/find-number-zeros-factorial-number-n-factorial can be found out by plainly dividing the number by 5 which gives you 6, But there is an extra 5 in the 25 since 25 = 5*5, which can be got again by dividing the number 5. So continuing so on, we get the above formulae.. Interview Questions ...