12403 results.

### Refine by Refine by

• #### Topics

• Q15 Simple Percentages
Question

Simple Percentages

rebelmaths

• Exam (3 questions)

No description given

• Mean±error 1
Question in Bin

A measurement is performed multiple times for the same object, the student will

• calculate the mean result
• calculate the standard error on the mean
• write the mean±error to the correct precision as defined by the error written to 1 significant figure

Advice is provided including on performing the calculations in Python or spreedsheets together with further reading.

• Question

Edit the Python code to make a 3D plot of a surface defined parametrically.

• Blakley
Draft
Question in SIT281

The students should solve a Blakley secret sharing scheme and find the secret.

• Question

Tests students' ability to apply the recursive form of the Extended Euclidean Algorithm.  Random four-digit inputs are chosen subject to the condition that the Euclidean Algorithm terminates in seven steps.

• Modular arithmetic
Question

Asks students to add and multiply two integers modulo another integer.  The modulus is a random number between 30 and 70, the summands are set to be large enough that modular reduction will be necessary.

• Multiplicative inverse
Question

Asks students to compute the multiplicative inverse of $a$ in $\mathbb{Z}_n$ where $n$ is an odd number between 31 and 61 and $a$ is an integer coprime to $n$ that lies between $n/4$ and $3n/4$.

• Square-and-multiply
Question

This question tests students' ability to use repeated squaring to perform modular exponentiation.  Moduli are random numbers between 30 and 70, the base is a number between 10 and 29.  To generate questions of approximately uniform difficult the exponent is taken to be 256 plus two smaller powers of 2.

• Question

A straightforward test of encrypting and decrypting an eight-letter message with the Vigenère Cipher using a four-letter key.  Message letters are generated uniformly at random from the English alphabet, as are the key letters.  Students are expected to be able to map English letters onto elements of $\mathbb{Z}_{26}$ in the usual order.

• Question

A straightforward test of encrypting and decrypting an eight-bit message with the Vernam Cipher.  The message and the key are uniform and independently generated eight-bit strings.

• Question

A straightforward test of encrypting and decrypting an eight-letter message with the Substitution Cipher.  Message letters are generated uniformly at random from the English alphabet and the key is a uniformly chosen random permutation of the alphabet.  Students are expected to be able to map English letters onto elements of $\mathbb{Z}_{26}$ in the usual order.

• Exam (6 questions)

No description given

• Exam (1 question)

No description given

• Exam (6 questions)

No description given

• Question

Manipulate surds and rationalise the denominator of a fraction when it is a surd.

• Question

No description given

• Test Yourself Week 1
Exam (8 questions)

Exercises covering Week 1 material for PHY1030

• Exam (1 question)

Python assignment for PHY1030 2023-24

• Question

A random dataset given by a linear function with noise (gradient and y-intercept of the linear function are randomised as is distribution of x values).

• Question in SIT281

The purpose of this question is to ask the students to go through one Rijndael round from the AES algorithm.

• Question

A straightforward test of encrypting and decrypting an eight-letter message with the Caesar Cipher.  Message letters are generated uniformly at random from the English alphabet, as is the key.  Students are expected to be able to map English letters onto elements of $\mathbb{Z}_{26}$ in the usual order.

• Properties of the transpose
Needs to be tested
Question
Question involving distributing the transpose operator across a number of matrices that are multiplied.
• Question

Dummy question to test random() function when first decimal place of upper limit of range is 4, and test of currency() function.

Question

Part of HELM Book 1.4.2

• Question in STAT7008

Given a random variable $X$  normally distributed as $\operatorname{N}(m,\sigma^2)$ find probabilities $P(X \gt a),\; a \gt m;\;\;P(X \lt b),\;b \lt m$.

• Question

No description given

• Question

No description given

• 1.4.1.Exercises