17. OCR GCSE (J277) 1.2 Converting between denary and 2 digit he

Jacob, Charlie, and Arjun are playing a game where they have to guess the base of the denary system. What is the base they should guess?

• 8

• 16

• 10

• 2

Jacob, Rohan, and Evie are working on a computer science project where they need to convert some numbers into hexadecimal. They are wondering which letters are used to represent the numbers 10 to 15 in hexadecimal. Can you help them?

• I, J, K, L, M, N

• A, B, C, D, E, F

• M, N, O, P, Q, R

• X, Y, Z, W, V, U

Mia, Florence, and Eesha are learning about different number systems in their computer science class. They learned about the hexadecimal system. Can you tell them how many numbers are there in the hexadecimal system?

• 16

• 10

• 8

• 20

Arjun is learning about hexadecimal numbers in his computer science class. His teacher asked him to convert the denary number 12 into hexadecimal. What would be Arjun's answer?

• 12

• 0B

• 0C

• 0A

Isla, Oliver, and Chloe are learning about binary numbers in their computer science class. Their teacher asked them to convert the denary number 24 into binary. What is the correct binary representation of the number 24?

• 11000

• 11100

• 10100

• 10010

Neha found an old note in her grandmother's attic with the hexadecimal number AB written on it. She is curious to know, what is the denary equivalent of this hexadecimal number?

• 155

• 171

• 200

• 190

Max, Isla, and Elsie are working on a computer science project. They come across a hexadecimal number, 36, in their code. They need to convert it to binary. What is the binary equivalent of the hexadecimal number 36?

• 100101

• 111010

• 101101

• 110110

Henry, Benjamin, and Arjun are working on a computer science project. They need to convert the denary number 100 into its hexadecimal representation for their code to work. What is the hexadecimal representation of the denary number 100?

• A4

• C4

• 64

• B4

Rosie, Isabelle, and Aarav are working on a computer science project. They encounter a hexadecimal number 7F in their code. They need to convert it to denary equivalent. What would be the denary equivalent of the hexadecimal number 7F?

• 135

• 130

• 127

• 120

Benjamin, Oscar, and Jacob are working on a computer science project. They need to convert the denary number 230 into binary for their project. Can you help them figure out what the binary representation of the denary number 230 is?

• 10101110

• 11011010

• 10011100

• 11100110