Thursday, 30 January 2020

CBSE Class 10 - Maths - Very Short Answer Based Questions (Solved Worksheet-1) (#eduvictors)(#cbseClass10Maths)

CBSE Class 10 - Maths - Very Short Answer Based Questions 

(Solved Worksheet-1) 
CBSE Class 10 - Maths - Very Short Answer Based Questions (Solved Worksheet-1) (#eduvictors)(#cbseClass10Maths)


Q1: What is the maximum no. of factors of a prime number?

Q2: What is the L.C.M of x and y if y is a multiple of x?

Q3: Find the zeroes of the polynomial x²-1.

Q4: For what value of ‘k’ the pair of equations x-ky+4=0 and 2x-4y-8=0 is inconsistent?

Q5: Determine k, so that the equation x²-4x+k=0 has no real roots.



Q6: Which term of the sequence 4,9,14...is 124?

Q7: Find the sum of first 10 multiples of 5.

Q8: If θ = 45°, find the value of sec² θ.

Q9: The ordinate of point A on y-axis is 5 and B has co-ordinates (-3, 1). Find the length of AB.

Q10: Find the area of ΔABC where A (2,3), B (-2,1) and C (3,-2)

Q11: Are two triangles with equal corresponding sides always similar?

Q12: The perimeters of two similar triangles ABC and PQR are respectively 36 cm and 24 cm. If PQ = 8 cm, then the value of AB is ____.

Q13: How many tangents can be drawn to a circle from a point outside the circle?

Q14: If the angle between two radii of a circle is 130°, then what is the angle between the tangents at the end points of radii at their point of intersection?

Q15: A wire in the shape of square of perimeter 88 cm. is bent so as to form a circular ring. Find the radius of the ring.

Q16: To divide the line segment AB in the ratio 2:3, a ray AX is drawn such that ∠BAX is acute, AX is then marked at equal intervals. Find minimum number of these marks.

Q17: Write a sample space when two coins are tossed simultaneously?

Q18: What is the surface area of a cube whose volume is 64 cm³?

Q19: Give the empirical relation between median, mode and mean.

Q20:  If the median of a series exceeds the mean by 3, find by what number the mode exceeds its mean?


Answers:

Answer 1: 2 (self and 1)

Answer 2: y

Answer 3: +1, -1
x²-1 = 0
(x + 1)(x - 1) = 0
⇒ x = -1 or x = 1


Answer 4: k = 2


Answer 5: k > 4
D < 0 for no real roots
b² - 4ac < 0
b² - 4ac < 0
(-4)² - 4(1)(k) < 0
16 -4k < 0
4 - k < 0
k > 4


Answer 6: n = 25

Answer 7: S = 275

Answer 8: 2

Answer 9: 5 units
A(0, 5) and B(-3, 1)
AB = √(-3 - 0)² + (1 - 5)² =  √(9 + 16) = √25
AB = 5 units


Answer 10: 11 square units

Answer 11: No, Included angles should be equal.

Answer 12: 12 cm

Answer 13: Two

Answer 14:  50°
Angle at the point of intersection of tangents = 180° — 130° = 50°.

Answer 15: 14 cm

Answer 16: Minimum number of marks = 2 + 3 = 5

Answer 17: S = { HH,HT,TH,TT}

Answer 18: 16 cm²

Answer 19: Mode = 3 median – 2 Mean

Answer 20: Exceeds by 9

Given, Median = Mean + 3
We know that, Mode = 3 Median -2Mean
  = 3 (Mean + 3)-2Mean
⇒ Mode = Mean +9

Hence Mode exceeds Mean by 9.


☞See also:
Help books for Maths are:

1. Oswaal CBSE Question Bank Class 10 Mathematics Book Chapterwise & Topicwise Includes   Objective Types & MCQ's (For March 2020 Exam)

2. Educart CBSE Sample Question Papers Class 10 Mathematics (Standard) For 2020 Exam

3. CBSE U-Like Sample Paper (With Solutions) & Model Test Papers (For Revision) in Mathematics for Class 10 for 2020 Examination

Maths Term 1 Sample Question Paper (2019-20)
Maths Term 1 Sample Question Paper (2019-20)
Maths Half Yearly Sample Question Paper (Set-1) (2019-20)
Maths Preboard Sample Question Paper Set-1(2019-20)
Maths Preboard Sample Question Paper (Set-2) (2019-20)
Maths Preboard Sample Question Paper (Set-3) (2019-20)
1 Marks Questions Asked in Previous Years Examination Papers
Managing Time in Solving Maths Question Paper (2019-2020)

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