Question

1) 3x + 4y = 12

2) Y = 4x +13

3) 3x +4y = 6

4) 2x + 3y = 16

5) x + y =36

PROBABILITY

1) In a well shuffled pack of 52 cards. Red queens are removed find the probability if we draw a card randomly
a) The card is a jack
b) an ace
c) king of hearts
d) ten of red

2) When two coins are tossed simultaneously find the probability of getting

a) almost one head
b) at least one tail

3) In a single throw of a dice find the probability of getting
a) An even number
b) a prime number
c) an odd number
d) neither a prime number nor an even number.

4) In a well shuffled pack of 52 playing cards all the face cards are removed, a card is chosen at random find the probability that the card is
a) Neither a king nor a jack
b) either a ten or an ace
c) a card of black colour.

STATISTICS

1) What is the mean of first five even numbers.

2) Find the mean of the factors of 20.

3) The mean of 5 numbers is 30. If one number is excluded, their mean becomes 28. Find the excluded number.

4) Mean of 25 observations was found to be 40.4. But later on it was discovered that 53 was misread as 35 at one place. Find the correct mean.

5) The mean of 15 observations is 28. If the mean of first 8 observations is 25 and that of last 8 is 30. Find the 8th term.

6) The mean of observations x, 2x +1, 2x +5 and 2x +9 is 30. What is the mean of last two observations?

7) If the mode of the data 3, 9, 6, 9,4, 3, x – 4 is 9 then find x.

8) The mean of 100 observations was found to be 50. If one of the observations, which was50 is replaced by 150, find the resulting mean.

Answer 1

Probability
1) king of hearts
2)
a) 1/2
b) 3/4

Answer 2

Answer:

Probability...

1) - king of hearts

2) - Almost on head

3)- neither a prime number nor an even number

4)- either a ten or ace

hope it helps you

and sorry....