From 5 different green balls, four different blue balls and three different red balls, how many combinations of balls can be chosen taking at least one green and one blue ball?
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There is a 14 digit credit card number in which every 3 consecutive digits add to 20. Here is a part of it.. Find the value of 'x'? _ _ _ 9 _ _ _ x _ _ _ 7 _ _
In a survey, 20% of a town has a car, and 10% have a bike. 1/3rd of the car owners also own a bike. What proportion of the town does not own either a car or a bike?
11,16,23,32,43,?
There N stations on a railroad. After adding x stations 46 additional tickets have to be printed. Find N and X.
halley is clarks father& arthur is halleys father.after some years when halleys age is equal to arthurs age,halleys age becomes 5 times of clarks present age.clarks age then is 8 times his fathers present age. sum of arthur & halleys age is 100 find clarks present age
Find the unit digit of product of the prime number up to 50 ?
Perimeter of front wheel =30, back wheel = 20. If front wheel revolves 240 times. Howm many revolutions will the back wheel take?
The First country printed Books
Everyday in his business a merchant had to weigh amounts from 1 kg to 121kgs, to the nearest kg.What are the minimum number of weight required and how heavy should they be?
The sum of 5 consecutive integers is 35. how many of the five consecutive integers are prime number
In an examination, 35% of the students passed and 455 failed. How many students appeared for the examination?
there are certain balls in the form a pyramid 1st layer has 1 ball ,2nd layer has 3 balls, 3rd layer has 6 balls ,4th layer has 10 balls and so on. if there are total 8460 balls.how many layers does tha pyramid has?