Linear-algebra Questions Set 7:
Find the degree of the polynomial 2x5 + 2x3y3 + 4y4 + 5
Solution:
If 3X + 4Y = 10Z and 2Z + Y = 7X, then
Solution:
The shape of a graph of a quadratic equation is a __________
Solution:
The HCF and LCM of two numbers are 24 and 168 and the numbers are in the ratio 1 ∶ 7. Find the greater of the two numbers.
Solution:
After 15 years, a man will be just four times as old as he was 15 years ago. What is his present age?
Solution:
If f(x) = x2 + 4, which of the following is equal to f(9)?
A. f(13)
B. f(-3)
C. f(-9)
D. f(f(√5))
E. f(f(√13))
F. f(f(-√5))
Solution:
Two plates and three spoons cost is Rs. 86. The cost of four plates and a spoon is Rs. 112. The difference between the cost of a plate and that of a spoon is ________.
Solution:
My father distributed Rs.280 in such a way that each girl received Rs.20 and each boy Rs.10. If the number of boys is less than that of girls by 2, find the number of boys?
Solution:
3 years ago, the ratio of Maya’s and Shika’s age was 5 : 9 respectively. After 5 years, this ratio would become 3 : 5. Find the present age (in years) of Maya.
Solution:
Rs. 720 was divided among A, B, C, D, E. The sum received by them was in ascending order and in arithmetic progression. E received Rs. 40 more than A. How much did B receive?
Solution:
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