If a,b,c,d are in harmonic progress then show that (a-c)(b-d)=4(a-b)(c-d)
write out the numbers. let the answers be in sequence
How to calculate the answer to "the average weight for a group of 20 women is 130 pounds. If the average weight for 3/4 of these women was 140 pounds, what was the average weight, in pounds, for the rest of the women?"
If the marks are given in the range of 0 to 100 .How many students should be thr in the class to assure that 2 of them will get the same marks.Ans:- 102(101 people will get from 0 to 101)
3 types of machines welding machine and 2 more types,lets say A,B and C .4 A\'s means 4 welding machines,10 B\'s and 6 C\'s.Product x needs 20 min of A 1 hour of B and 30 minutes of C.Product y needs 1 hour of A 2 hors of B and 1 hour of CQ1>in a day (24 hours) how many units of X can be madeQ2>how many Y???
150 questions of which 25% maths questions.Each maths sum takes twice the time than normal sum.In 2 hours you solve all the sums how much time does you solve maths sums?Ans a>48 b>55,c>58,d>60
The 4 subjects marks in the ratio 6:7:8:9 and average=60 how many subjects more than 50 did he score.g
Numerator and denominator are in the ratio of 1:10 .new fraction was made my subtracting 1 from numerator and adding 5 to denominator.difference between the two fractions was given I think it was 1:5. Find the numerator of original fraction.options were 4 ,5 remaining 2 I don\'t remember but 1 was not there in the answer for sure
A plane goes east at 8 am with 600km/hr Another plane goes north at 5 pm with 650km/hr .What will be the distance between them at 8
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