Correct Answer Is : 39/5

Solution Is :

The area of the triangle formed by the line 5x + 7y = 35, 4x + 3y = 12 and x-axis is

Correct Answer Is : 160/13 Sq unit

Solution Is : 5x+7y = 35 --> (i)
4x+3y = 12 -->
(ii) By equation (i) *4 - (ii) *5 (20 x + 28 y = 140) - (20x +15y = 60) 13y = 80
⇒ 5x + 7 × 0 = 35, ⇒ 5x = 35
⇒ x = 7, (7, 0)
Similarly, point of intersection
Therefore Base = 7 - 3= 4
Therefore Area = (1/2)*4*(180/13)
=160/13 sq.unit

Correct Answer Is : 3/5, 4/15

Solution Is :

If 17²°° is divided by 18, the remainder is

Correct Answer Is : 1

Solution Is :

When 2power31 is divided by 5 the remainder is

Correct Answer Is : 3

Solution Is :

If a=√x+2+√x-2/√x+2√x-2 then the value of (a²-ax)is

Correct Answer Is : -1

Solution Is :

The HCF of X8 - 1 and X4 + 2X3 - 2X - 1

Correct Answer Is : X²-1

Solution Is :

The least number which when divided by 6,9,12,15,18 leaves the same remainder 2 in each case is:

Correct Answer Is : 182

Solution Is :

If X=X24 + 1/X12 = 7then the X72 + 1/X36 value of

Correct Answer Is : 322

Solution Is :

If 5x + 9y = 5 and 125x + 729y = 120 then the value of the product of x and y is

Correct Answer Is : 1/135

Solution Is : 5x +9y = 5 ...(i)
125x³+ 729y³=120 ...(ii)
Now cube both sides of equation (i), we get
⇒ (5x + 9y)³= (5)³
⇒125x³ + 729y³+135xy(5x +9y)=125
⇒ 125x³ + 729y³ +135xy *5 =125
Now, put the value of equation (i)
120 + 135 xy × 5 = 125
⇒ 135 × 5xy = 125 - 120
⇒135 × 5xy = 5 ⇒
xy=(5/(135*5))=1/135