Mathematics

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Online Examination

UPSC/PSC/BANK/RAILWAY,etc. examination questions

Questions about Mathematics including Kerala Administrative Service (KAS), Secretariat Assistant, Panchayath Secretary, BDO, Auditor, Assistant, LDC and LGS examination level questions. You need a lot of experience in taking an online exam.

1.

What are natural numbers

Ans:-1,2,3,4.........etc


2.

The lowest natuaral number is

Ans:-One


3.

What are whole numbers

Ans:-Natural numbers including zero


4.

The lowest whole number is

Ans:-zero


5.

The lowest even numbers

Ans:-Two


6.

The lowest prime number

Ans:-Two


7.

The additive inverse of x+1 is

Ans:-x-1


8.

Which is known as the additive identity of addition

Ans:-Zero


9.

Which is known as multiplicative inverse of multiplication

Ans:-One


10.

1.5 x 1.5= ----------

Ans:-2.25


11.

.15 x .15=--------

Ans:-.0225


12.

How many prime numbers are there before 50

Ans:- 15

Ans:-(2,3,5,7,11,13,17,19,23,29,31,37,41,43,47)


13.

The sum of the prime numbers between 30 and 50

Ans:-199

Ans:-(31+37+41+43+47)


14.

(-28) - (-28) = -----------

Ans:--28+28= 0


15.

If 149 x m = 12367, what is the value of m

Ans:-12367/149 = 83


16.

The differecne betewween the place value and the face value of 3 in the number 2435 is _____

Ans: 27

Face value of a digit in a number is the digit itself, whatever place it occupies

ie. face value of 5 is 5, face value of 3 is 3 , face value of 2 is 2

Place value of a digit in a number = face value X value of the place it occupies

ie. place value of 5 is 1, place value of 3 is 10, place value of 4 is 100, place value of 2 is 1000

Calculation

face value of 3 = 3

place value of 3 =30

differecne=30-3 =27


17.

The place value of 8 in 15,051 is __________

Ans: 10,000


18.

The face value of 9 in 49,001 is __________

Ans: 9


19.

The smallest six digit number is _____

Ans: 1,00,000


20.

The greatest six dight number is _____

Ans: 9,99,999


21.

one lakh is equal to __________ in international system

Ans:1 hundred thousand

ie

place value of one in international system is rpresented in indian sytem as ( hundreds, tens, ones)

place value of thousand in international system is rpresented in indian sytem as ( Lakh, ten thousand, thousand)

place value of Millions in international system is rpresented in indian sytem as ( Ten crores, Crore, Tenlakhs)

in international system there are three period , one period, thousand period and million period

ie. three place value period in international system eg 92,354,689

the above number in indian place value period: 9,23,54,689


22.

10 lakh is equal to _____ million

Ans: 1miilion


23.

10 million is equaal to _____ crore

Ans: 1 crore


24.

10 crore is equal to _____ million

Ans: 100 million


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