[PPSC Scientific Officer (Cyber Forensics, 2023)]

1. X, Y and Z hired a car for Rs. 520 and used it for 7, 8 and 11 hours respectively. Hire charges paid by Y were





Answer & Solution

Answer:

160

Solution:

Let the hire charges paid by Y be Rs. y.

We know that the total hire charges for the car were Rs. 520, and the car was used by X, Y, and Z for 7, 8, and 11 hours respectively.

Let the hire charges per hour be Rs. h. Then we can write:

7h + 8h + 11h = 520

Simplifying the above equation, we get:

26h = 520

h = 20

Therefore, the hire charges per hour were Rs. 20.

Now, we know that Y used the car for 8 hours, and the hire charges per hour were Rs. 20. So, the hire charges paid by Y can be calculated as:

hire charges paid by Y = 8h = 8 x 20 = Rs. 160

Therefore, the hire charges paid by Y were Rs. 160.

[PPSC Scientific Officer (Cyber Forensics, 2023)]

2. What was the day on 15th August 1951 ?





Answer & Solution

Answer:

Wednesday

[PPSC Scientific Officer (Cyber Forensics, 2023)]

3. Find ‘a' in the following figure





Answer & Solution

Answer:

6

[PPSC Scientific Officer (Cyber Forensics, 2023)]

4. If A % B means A is the mother of B; A $ B means A is the brother B; A * B means A is the father of B and A + B means A is the sister of B, A – B means A is spouse of B, which of the following shows that P is the maternal aunt of Q





Answer & Solution

Answer:

P – S $ R % Q

[PPSC Scientific Officer (Cyber Forensics, 2023)]

5. Neelaksh has a collection of coins of 50p, 25p, 10p and 5p. They are present in the ratio of 1:2:2:6. He knows that the total amount with him is Rs. 330. How many more coins of 5p are there than that of 50p?





Answer & Solution

Answer:

1100