Quadratic Word problems

For the same amount of work, 

“A” takes 6 hours less than “B”. 

If together they complete the work in 

13 hours 20 minutes, 

Find how much time will “B” alone 

take to complete the work?

Quadratic Word problems

Sum of two natural numbers is 8 and

 the difference of their reciprocals is 2/15  .

 Find the numbers.

Quadratic Word problems-2

1 

  

Five times a certain whole number

 is equal to 3 less than twice 

the square of the number.

 Find the number.

Quadratic Word problems

Find two natural numbers 

which 

differ by 3 

and the sum of their 

whole squares 

is 117.

prob-quiz-11

\ Two dice are rolled together simultaneously. Find the probability of:

(i)                  Obtaining a total of at least 9.

(ii)                Getting a multiple of 2 on one die and a multiple of 3 on the other die.

(iii)              Getting a multiple of 3 as the sum.1.  Two dice are rolled together simultaneously. Find the probability of:

(i)                  Obtaining a total of at least 9.

(ii)                Getting a multiple of 2 on one die and a multiple of 3 on the other die.

(iii)              Getting a multiple of 3 as the sum.

probability-quiz of the day

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 In a T.T. match between Susan and Mary, 

the probability of winning of Mary is 0.73. 

Find the probability of:

(i)                  Winning of Susan

(ii)                Not winning of Mary  

probability-quiz of the day

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(i)                  If A and B are 2 complementary events then 

what is the relation between P(A) and P(B)?

(ii)                If the probability of happening of an event A is 0. 46, 

What will be the probability of not happening of event A?