1.
If x : y =2 : 3 and z : y =4 : 6, then find x : z
2.
√X is a perfect square. Which of the following is/are true?
3.
Number of terms in the expansion (a + b) (c + d) is ——–
4.
If 496 x 492 = x² – 4 (x>0), then x=——–
5.
ab = ba but b ≠ a, then find a + b.
6.
What distance will a train cover in 1.2 minute travelling at 72 km/h ?
7.
Which of the following sets is not closed under subtraction?
8.
Twelve persons can make 480 toys in eight days. How many toys can 21 persons make per day?
9.
(2x − 6y)² – (6y + 8x)²= ?
10.
Period of the decimal 2.3636363……. is :
11.
If it is given that xyz = 0, Find: (ax)yz + (ay)xz + (az)xy
12.
What should be subtracted from x³ + 2x² -3x +6, so that the difference is a multiple of x − 2 ?
13.
Find the least natural number which when divided by 6, 7, 9, 12 and 18 leaves no remainders.
14.
If a² – b² = 36 and a + b =4, then (a – b)² =———-
15.
a6 < 1000, Find the greatest possible values of the whole number 'a'.
16.
A 240 m long train running at 72 km/h crosses another train coming from opposite direction at a speed of 90 km/h in 12 seconds. Find the length of the other train.
17.
Which of the following is/are perfect squares?
18.
Rs 2000 is lent out at 0.3% per month for 10 years under simple interest. Calculate the amount.
19.
What is the remainder when (2x² + 3x +7) is divided by (x + 2)?
20.
If p + q =15 and pq=54, then p – q can be
