DE POST flashcards

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

Percentage change formula

Subtract the old value from the new value, divide by the old value, multiply by 100. A rise from 40 to 50 is a 25% increase; the reverse move is a 20% decrease.

km/h to m/s

Divide the speed in kilometres per hour by 3.6 to get metres per second. Thus 90 km/h equals 25 m/s, which is useful for travel-time and stopping-distance estimates.

Combined work rate

Add the reciprocal times of each worker to get the combined rate per hour. If one needs 4 hours and another 12, together they complete 1/4 plus 1/12, i.e. one third per hour, so 3 hours.

Weighted average

Multiply each value by its weight, sum the products, then divide by the total weight. Use it for average handling time per parcel type when volumes differ between types.

Reverse percentage after discount

If a price after a 15% discount is 68.00, divide by 0.85 to recover the original 80.00. Multiplying 68 by 1.15 gives the wrong base because the percentage applies to the original.

Doubling time rule of 70

Divide 70 by the percentage growth rate to approximate doubling time. At 5% annual growth, volume doubles in roughly 14 years; at 2% it takes about 35 years.

Cannot say answer

In verbal reasoning, choose this when the passage neither supports nor contradicts the statement. Missing comparisons, absent dates, and unstated quantities typically produce this answer.

Quantifier scope error

Treating 'most' as 'all' or 'some' as 'many' changes a statement's truth value. The passage must contain the same strength of quantifier for the statement to be supported.

Fact versus reported claim

A passage saying an official asserted something supports only that the assertion was made. It does not support the content of the claim as true unless the text independently confirms it.

Comparative statement test

A statement that one item exceeds another is supported only if both values appear in the passage. If just one figure is given, the correct answer is cannot say.

Correlation versus causation

Two events occurring together in a passage do not justify a causal statement. Only explicit causal wording in the text supports an answer that names a cause.

Interleaved number series

Split the sequence into odd and even positions and analyse each sub-series separately. Each usually follows its own simple rule, such as adding 3 or doubling.

Rotation versus reflection

Rotation turns a figure and preserves handedness; reflection mirrors it and reverses handedness. A mirrored letter or arrow cannot be produced by rotation alone.

Syllogism with some premises

From 'All A are B' and 'Some B are C', nothing follows about A and C. A conclusion needs a premise linking the middle term to the subject in the required direction.

Negation test for assumptions

Deny the candidate assumption and re-read the argument. If the reasoning collapses, the statement is a necessary assumption; if it survives, the statement is not required.

Verify rule on all figures

A pattern rule must hold for every given figure, not just the first two. Rules that fit early items often fail later, so confirm before choosing the answer.

Alternating transformation rule

Some matrices change by two rules in turn, for example add one element then rotate 90 degrees. Identify the cycle length before predicting the missing figure.

Transposed digit check

Read number pairs in both directions to catch swapped digits such as 6041 against 6014. Transposition is the most common error in address and reference-number comparison.

High-risk character pairs

O and zero, I and one and lowercase l, S and five, B and eight, rn and m, cl and d. These pairs cause most copying errors in postal codes and street names.

German versus US date order

In German usage 03/04/2024 means 3 April; in US usage it means 4 March. Confirm the convention before judging a date as correct or wrong.

Unit consistency check

Convert to one unit before comparing. Since 1,200 g equals 1.2 kg, a 1,200 g item is lighter than a 1.5 kg item, which a raw number comparison would reverse.

Check digit purpose

A check digit validates the rest of a code. Transposing two adjacent digits usually changes the computed check value, so such codes are designed to detect exactly that error.

Complaint handling sequence

Acknowledge the issue, clarify the facts, take the permitted action, then confirm the outcome. This order resolves delivery complaints without unnecessary escalation.

Safety before courtesy

When a complaint involves a hazard, legal duty, or data protection, compliance takes priority over speed and apology. Courtesy follows once the risk is addressed.

No unverified promises

Never commit to a delivery time, refund, or compensation you cannot confirm. State what you will check and when you will report back to the customer.

Escalation trigger

Escalate when the request exceeds your authority, involves liability or legal claims, or requires disclosing personal data. Routine delivery issues stay with the front-line agent.

Data protection on the phone

Never confirm an address or shipment detail to an unverified caller, including relatives. Verify identity through the approved channel before disclosing anything about a consignment.

Standard parcel flow

Acceptance, sorting hub, line haul, delivery depot, last mile, then delivery or notification card. Each stage should generate a scan that forms the tracking history.

In transit status meaning

In transit means the item has entered the network, not that it is out for delivery. Out for delivery is a later, separate status at the delivery depot.

Proof of delivery

Signature-required and registered items need documented handover. Leaving them with a neighbour requires the recipient's prior consent under the applicable delivery rules.

Undeliverable item process

Items that cannot be delivered are held for a defined retention period, then returned to sender. Return costs normally fall on the sender unless agreed otherwise.

German compound gender rule

In a German compound noun, the gender is that of the final element. Der Brief plus der Kasten gives der Briefkasten, regardless of the first component's gender.

German formal letter frame

Open with 'Sehr geehrte Damen und Herren,' and close with 'Mit freundlichen Grüßen'. The closing formula takes no trailing comma, and the next line carries only the signature.