to get 1?
Post Your Answer
State 'T' for true and 'F' for false and select the CORRECT option.
(i) A prime number cannot have 0, 2, 4, 5, 6 and 8 at its ones place except 2.
(ii) Two numbers are called co-primes, if their L.C.M. is 1.
(iii) If X is a factor of Y and Y is a factor of Z, then X is also a factor of Z.
(iv) 4 is the smallest composite number.
| (i) | (ii) | (iii) | (iv) | |
|---|---|---|---|---|
| A | T | T | F | T |
| B | F | F | T | T |
| C | T | F | T | T |
| D | T | F | T | F |
B
Ans 1:
Class : Class 3
The first statement is false because it should be stated except 2 and 5 in the second part of the sentence, since 5 is also a prime number.
Post Your Answer
Post Your Answer
Match the following and select the correct option.
| Column I | Column II | ||
|---|---|---|---|
| (i) | The ordinate of the mirror
image of the point (8, 6) along the x-axis is __________ . |
(p) | 8 |
| (ii) | If (10, 8) = (3x – 5, 5 + y), then the value of (x – y)3 is __________. |
(q) | – 5 |
| (iii) | In the ordered pair (–10, b), if the first member of the pair is twice the second member, then the value of ‘b’ is __________. |
(r) | – 6 |
A(i)→(q); (ii)→(p); (iii)→(r)
B(i)→(r); (ii)→(p); (iii)→(q)
C(i)→(r); (ii)→(q); (iii)→(p)
D(i)→(p); (ii)→(r); (iii)→(q)
Post Your Answer
Post Your Answer
of the total mass is copper and 
of the remainder
is nickel. What mass of German silver will contain 
kg of zinc?
Post Your Answer
