BDC-07C Math Lecture-01 (06-09-21)

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Total questions: 15
Duration: 10 minutes

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1 / 15

For over two centuries, no one had been able to make Damascus blades - blades with a distinctive serpentine surface pattern - but a contemporary sword maker may just have rediscovered how. Using iron with trace impurities that precisely matched those present in the iron used in historic Damascus blades, this contemporary sword maker seems to have finally hit on an intricate process by which he can produce a blade indistinguishable from a true Damascus blade.

Which of the following, if true, provides the strongest support for the hypothesis that trace impurities in the iron are essential for the production of Damascus blades?

Almost all the tools used by the contemporary sword maker were updated versions of tools that were used by sword makers over two centuries ago.

The iron with which the contemporary sword maker made Damascus blades came from a source of iron that was unknown two centuries ago.

There are surface features of every Damascus blade—including the blades produced by the contemporary sword maker—that are unique to that blade.

Production of Damascus blades by sword makers of the past ceased abruptly after those sword makers' original source of iron became exhausted.

2 / 15

The first woman prime Minister of Britain was

Dame Eugenia Charles

Margeret Thatcher

Golda Meir

Gro Harlem Brundtladn

3 / 15

Which of the following describes all values of x for
which 1 – x
2
≥ 0 ?

x ≤ - 1 or x ≥ 1

x ≤ - 1

-1 ≤ x ≤ 1

x ≥ 1

4 / 15

Limpid

Violent

Suspicious

Transparent

Opaque

5 / 15

Each IP packet must contain-

Source and Destination Address

None

Only Source Address

Only Destination Address

6 / 15

ষত্ব বিধান অনুযায়ী নিচের কোন বানানটি ভুল?

অভিসেক

মনীষা

উষা

অভিলাষ

7 / 15

In order to tell Excell that we are entering a formula in cell, we must begin with an operator such as

$

#

=

@

8 / 15

ষত্ব বিধান অনুযায়ী নিচের কোন বানানটি ভুল?

মনীষা

অভিলাষ

উষা

অভিসেক

9 / 15

The student's feelings about presenting the
commencement address were -------; although visibly
happy to have been chosen, he was nonetheless -------
about speaking in public.

euphoric . . hopeful

unknown . . modest

positive . . insecure

ambivalent . . anxious

10 / 15

The Operator was commended for his dexterity

Punctuality

courtesy

Cooperation

Skill

11 / 15

During a special promotion, a certain filling station is
offering a 10% discount on gas purchased after the first
10 gallons. If Kim purchased 20 gallons of gas, and Zeni
purchased 25 gallons of gas, then Zeni's total per-gallon
discount is what percent of Kim's total per-gallon
discount?

120%

80%

140%

100%

12 / 15

Which country known as the sugar bowl of the world?

Cuba

Germany

Brazil

Srilanka

13 / 15

To move to the bottom of a document press

Ctrl + End key

Find key

Shift + End key

Alt + End key

14 / 15

মধ্যযুগের প্রধান ছন্দ কোনটি?

অমিত্রাক্ষর ছন্দ

মাত্রাবৃত্ত

স্বরবৃত্ত

পয়ার

15 / 15

The author of the book "Wings of Fire" is-

Nelson Mandela

Mother Teresa

Martin Luthar King

APJ Abdul Kalam

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