sbi clerical mock test
DESCRIPTION
Leepe tutorials provides you coaching for sbi clerical exam and conducts monthly mock test for your best practice and preparation.TRANSCRIPT
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SAMPLE PAPERS FOR SBI CLERK EXAM BY LEEPE TUTORIALS
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MATHEMATICSMathematics is an important section
of SBI clerk exam. Today we will discuss about the basics of math. This will help you a lot. Everyone
knows how to solve a question but what matters is your Speed and
Accuracy. And for that you should know the basics of Maths.
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Introduction to Number Systems
Natural Numbers:
All positive integers are natural numbers. Example: 1,2,3,4,8………
There are infinite natural numbers and number 1 is the least natural number.
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Classification of Natural Numbers
Prime Numbers:
A natural number larger than unity is a prime number if it does not have other divisors excepts for itself and unity.
Based on divisibility there would be two types of natural numbers. They are PRIME and COMPOSITE.
Note: Unity i.e. , 1 is not a prime number.
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Properties of Prime Numbers
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Process to Check a Number is Prime or not• Take the square root of the number.• Round of the square root to the next highest integer call this
number as Z. Check for divisibility of the number N by all prime number below Z. If there is no numbers below the value of Z which divides N then number will be prime.
Example 239 is prime number or not?
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Composite Numbers
The number which are not prime are know as composite numbers.
Co- Primes:
Two number a and b are said to be co-primes, if their H.C.F is 1 Example (2,3), (4,5), (7,9), (8,11)…….Place value or Local value of a digit in a Number.
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Place ValueExample 689745132Place value of 2 is (2x1) = 2Place value of 3 is (3x10) = 30 and so on.
Face ValueIt is the value of the digit itself at whatever place it may be.
Example 689745132face value of 2 is 2Place value of 3 is 3 and so on.
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To Know More About Mathematics
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