(3x + 2) (2x - 5) = ax² + kx + n . Wha | Problems on Numbers Questions & Answers

Q:

What approximate value will come in place of the question mark(?) in the below question?

(47% of 1442 - 36% of 1412) + 63 = ?

A) 4	B) 5
C) 3	D) 6

Answer & Explanation Answer: C) 3

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Problems on Numbers

22 29329

Q:

In the following question a number series is given which has only one wrong number. You have to find out the wrong number?

7.5 47.5 87.5 157.5 247.5 357.5 487.5

A) 47.5	B) 87.5
C) 247.5	D) 357.5

Answer & Explanation Answer: A) 47.5

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Problems on Numbers
Exam Prep: Bank Exams
Job Role: Bank PO

14 5806

Q:

40 % of 250 = 50% ?

A) 200	B) 100
C) 150	D) 400

Answer & Explanation Answer: A) 200

Explanation:

As per given

$\frac{40}{100} \times 250 = \frac{50}{100} \times x$

$\Rightarrow x = 200$

Report Error

View Answer Report Error Discuss

Filed Under: Problems on Numbers
Exam Prep: Bank Exams
Job Role: Bank PO

6 6905

Q:

The difference between two numbers is 1365. When larger number is divided by the smaller one, the quotient is 6 and the remainder is 15. The smaller number is ?

Answer

Let the numbers be x and 1365+x

Then 1365+x = 6x+15

=> x = 270

Workspace

Report Error

View answer Workspace Report Error Discuss

Subject: Problems on Numbers

35 17506

Q:

If sum of three consecutive numbers is 42 . What will the sum of the digits of middle number .

Answer

Let the numbers be x, x+1, x+2

Then x + x+1 + x+2 = 42

=> 3x + 3 = 42

=> 3x = 39

=> x = 13

The numbers would be 13, 14, 15

Therefore, Sum of the digits of middle number = 1+4 = 5

Workspace

Report Error

View answer Workspace Report Error Discuss

Subject: Problems on Numbers

8 6124

Q:

A fraction becomes 2/3 when 1 is added to both, its numerator and denominator .And , it becomes 1/2 when 1 is subtracted from both the numerator and denominator. What is the fraction?

Answer

Let required fraction be $\frac{x}{y}$ then

$\frac{x+1}{y+1}=\frac{2}{3}\Rightarrow 3x-2y=-1$ ............. (i)

and $\frac{x-1}{y-1}=\frac{1}{2}\Rightarrow 2x-y=1$ ............ (ii)

Solving (i) and (ii) we get x=3, y=5

$\inline \therefore$ Required fraction = $\frac{3}{5}$

Workspace

Report Error

View answer Workspace Report Error Discuss

Subject: Problems on Numbers

16 7785

Q:

The total weight of a tin and the cookies it contains is 2 pounds. After ¾ of the cookies are eaten, the tin and the remaining cookies weigh 0.8 pounds. What is the weight of the empty tin in pounds?

A) 0.2	B) 0.3
C) 0.4	D) 0.5

Answer & Explanation Answer: C) 0.4

Explanation:

Let the weight of the empty tin = w

(2 - w) = weight of the cookies; and one quarter of the cookies weigh (2 - w)/4

One quarter of the cookies + tin = 0.8 = w + (2 - w)/4

Multiply through by 4; 3.2 = 4w + 2 - w

1.2 = 3w; w = 0.4

Report Error

View Answer Report Error Discuss

Filed Under: Problems on Numbers
Exam Prep: GRE

1 8151

Q:

x and y are integers

x + y < 11 , and x > 6

What is the smallest possible value of x - y ?

A) 1	B) 24
C) 4	D) -2

Answer & Explanation Answer: C) 4

Explanation:

The smallest value will be obtained by giving x the smallest possible value while y gets the largest possible value. The smallest value for x = 7. This means that y will have to be less than or equal to 3 (so that x + y <11), but we want the largest value of y which is 3.

A) 5	B) 8
C) 9	D) 10

(3x + 2) (2x - 5) = ax² + kx + n .

What is the value of a - n + k ?

Quick Links

(3x + 2) (2x - 5) = ax² + kx + n . What is the value of a - n + k ?

Quick Links

(3x + 2) (2x - 5) = ax² + kx + n .

What is the value of a - n + k ?