Write all prime numbers between 60 and 80
Answer: Prime numbers are numbers which do not have any factors other than 1 and the number itself. 61, 67,... View Article
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Write each of the following as decimals:
(a) 5/10 (b) 3 + 7/10 (c) 200 + 60 + 5 + (1/10) (d) 70 + 8/10 (e) 88/10 ... View Article
Determine which of the following polynomials has (x+1) a factor.
(i) x3 + x2 + x + 1 (ii) x4 + x3 + x2 + x + 1 (iii) x4... View Article
Solve (-96)÷16
Answer: -96/16 = -6 When -96 is divided by 16, the quotient is -6.
63a2 – 112b2. How do we factorize this using suitable identity?
(a) 7(3a – 4b) (3a + 4b) (b) 7(3a + b) (a – 4b) (c) (3a – 4b) (3a –... View Article
Pollination by bats is called as
Answer: Pollination by bats is called chiropterophily.
How many alphabet keys does a keyboard have?
Answer: A keyboard has 26 alphabet keys. Alphabet keys have letters on them. They are used to type words and... View Article
The product of a rational number and its reciprocal is
Answer: The product of a rational number and its reciprocal is 1. For example consider 2/5. Reciprocal of 2/5 is... View Article
RAM is also called as
(a) Read – write Memory (b) Long Memory (c) Permanent Memory (d) None of the above Solution: RAM is also... View Article
In which of the following is the first number not a factor of the second number
(a) 4, 76 (b) 12, 136 (c) 15, 495 (d) 18, 918 Solution: (a) Consider 4 and 76. 76 is... View Article
The shape of NH3 molecule is
(a) tetrahedral (b) trigonal planar (c) trigonal pyramidal (d) linear Solution: In NH3, N is sp3 hybridised. N of NH3... View Article
What is the comparative and superlative degree of thin?
Answer: Thin – Thinner – Thinnest Comparative is thinner. Superlative is thinnest.
Fill in the blanks with suitable determiners.
(1) _____ house is not mine. (2) I have_______ more files to complete. (3) She does not like him________ (4)... View Article
Find the value of root 7 up to 6 decimal places by long division method
Answer: Root of 7 up to 6 decimal places is 2.645751 The following figure shows the long division method.
What is the sum of two co-interior angles.
Answer: When two parallel lines are intersected by a transversal, the angles formed in between them are called co-interior angles.... View Article
The average of the first 20 results is 20 and that of the next 30 results is 30. What is the average of all 50 results?
(a) 26 (b) 25 (c) 24 (d) 50 Answer: Average of first 20 results = 20 So sum of first... View Article
a2-b2 is equal to
Answer: (a2-b2) = (a+b) (a-b)
The zeros of the quadratic polynomial x2 + 99x + 127 are
(a) Both positive (b) Both negative (c) One positive and one negative (d) Both equal Solution: Given polynomial is x2... View Article
The study of ancient societies is called
(a) Anthropology (b) Archaeology (c) History (d) Ethnology Solution: The study of ancient societies is called archaeology. Archaeology is the... View Article
What is the other gender of hen?
Answer: The other gender of hen is rooster.
