NU Bangladesh Honours Admission flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Average of consecutive integers

For evenly spaced numbers, the average equals the middle value; with an even count it is the mean of the two central values.

Compound interest formula

Amount A = P(1 + r/n)^(nt), where P is principal, r the annual rate as a decimal, n compounding periods per year, t years.

Work-rate principle

If one worker finishes a job in x days, the rate is 1/x per day; combined rates add, so together the time is the reciprocal of the summed rates.

Combination formula

The number of ways to choose r objects from n without regard to order is nCr = n! divided by r!(n-r)!.

Permutation formula

The number of ordered arrangements of r objects chosen from n distinct objects is nPr = n! divided by (n-r)!.

Addition rule of probability

For any two events, P(A or B) equals P(A) plus P(B) minus P(A and B); if mutually exclusive, the last term is zero.

Successive percentage change

Two successive changes of a percent and b percent give a net change of a + b + ab/100 percent, where signs indicate increase or decrease.

Syllogism validity rule

A conclusion is valid only if it is true in every possible arrangement of the premises; a single counterexample model invalidates it.

Ratio scaling method

Express quantities as multiples of a common variable, for example 2x and 3x for a 2:3 ratio, then use the given total to find x.

Break-even guessing accuracy

With m marks for correct and p penalty for wrong, guessing has positive expected value only when accuracy exceeds p divided by (m + p).

Bangladesh independence timeline

Independence was declared on 26 March 1971, and the Liberation War ended with victory on 16 December 1971, now observed as Victory Day.

Bangladesh Constitution date

The Constitution of Bangladesh was adopted on 4 November 1972 and took effect on 16 December 1972, the first anniversary of Victory Day.

United Nations founding

The United Nations was founded on 24 October 1945; its Security Council has five permanent members holding veto power.

SAARC founding details

The South Asian Association for Regional Cooperation was founded on 8 December 1985 in Dhaka, with its secretariat located in Kathmandu, Nepal.

Sundarbans significance

The Sundarbans, shared by Bangladesh and India, is the world's largest mangrove forest and a UNESCO World Heritage Site.

Bangladesh national symbols

Bangladesh's national flower is the water lily, the national bird is the oriental magpie-robin, and the national fish is the hilsa.

International Mother Language Day

Observed on 21 February, it honours the 1952 Language Movement martyrs of Bangladesh and was recognised by UNESCO in 1999.

Subject-verb agreement

A singular subject takes a singular verb and a plural subject a plural verb; words like each, every, either and neither are singular.

Present perfect tense

Formed with have or has plus the past participle, it describes a past action connected to the present, often with since or for.

Third conditional structure

It uses if plus past perfect in the condition and would have plus past participle in the result, describing unreal past situations.

Passive voice formation

The object becomes the subject, and the verb becomes a form of be plus the past participle, optionally followed by the agent.

Since versus for

Since marks a starting point in time, as in since 2010; for marks a duration, as in for three years.

Relative pronoun choice

Use who for people, which for things, and that in defining clauses; whose shows possession and where refers to place.

Definite versus indefinite article

Use a or an for a non-specific countable singular and the for a specific or unique referent already identified.

Gerund after prepositions

A verb following a preposition takes the -ing form, as in good at solving problems or interested in reading.

Comparative with than

Adjectives of one syllable add -er and take than; longer adjectives use more plus the base form, as in more difficult than.

Negative marking break-even

With one mark for correct and a quarter-mark penalty for wrong, guessing is worthwhile only above 20 percent expected accuracy.

Elimination guessing value

Reducing four options to two raises guess accuracy to 50 percent, which usually exceeds the break-even threshold under standard penalties.

Time-per-item benchmark

Divide total exam minutes by total items to get the average allowance; spending more than twice this on one item risks unfinished sections.

Two-pass attempt strategy

First answer every item you are confident about, then revisit flagged items, so high-certainty marks are secured before time runs out.

Net score computation

Net score equals correct answers multiplied by marks per item minus wrong answers multiplied by the stated penalty; unanswered items add zero.

Reading comprehension approach

Read the question stems first, then scan the passage for the relevant lines, and choose the option supported directly by the text.