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Q) Two dice of different colours are thrown at the same time. Write down all the possible outcomes. What is the probability that: (i) same number appears on both the dice?(ii) different number appears on both the dice? (Q 31 – 30/1/1 – CBSE 2026 Question Paper) Ans: Step 1: We know that in case […]
Q) A solid is in the form of a cylinder with hemispherical ends. The total height of the solid is 20 cm and the diameter of the cylinder is 7 cm. Find the total volume of the solid. (Use Ï€ = 22/7) [Q 30 – 30/1/1 – CBSE 2026 Question Paper] Ans: Step 1: Let’s
Q) The coordinates of the centre of a circle are (x − 7, 2 x). Find the value(s) of ’x’, if the circle passes through the point (− 9, 11) and has radius 5 √2 units. (Q23 – 30/1/1 – CBSE 2026 Question Paper) Ans: Step 1: We are given, Coordinates of the centre =
Q) If α, β are the zeroes of the polynomial p(x) = x^2 − 3x − 1, then find the value of 1/α +1/β. (Q21 – 30/1/1 – CBSE 2026 Question Paper) Ans:     Step 1: Given polynomial, p (x) = x 2 – 3 x – 1 For p (x) = 0, x 2
Q) Prove that the perpendicular at the point of contact to the tangent to a circle passes through the centre. 9th Class Maths – NCERT Important Questions Ans: Step 1: Let’s make a diagram for better understanding of the question: Here, PT is the tangent to a circle with center O. We have drawn QT
Q)Â The mean of the following frequency distribution is 35. Find the values of x and y, if the sum of frequencies is 25: (Q35 – 30/1/1 – CBSE 2026 Question Paper) Ans: Step 1: Le’ts calculate the sum of frequencies: By 1st condition, we are given that sum of frequencies is 25 From table,
Q) Do the points P (1, 0), Q (-5, 0) and R (-2, 5) form a triangle ? If so, name the type of triangle formed. (Q21 – 30/1/3 – CBSE 2026 Question Paper) Ans:Â Step 1: Let’s first understand the question: By Triangle Inequality Property, We know that to form a triangle, the sum
Q) If tan θ =24/7, then find the value of sin θ + cos θ. (Q 22 A – 30/1/3 – CBSE 2026 Question Paper) Ans: Step 1: We know that in a right angled triangle, tan θ is given by: Since we are given that tan θ = ∴ We can assume that Opposite
22 a. If tan θ =24/7, then find the value of sin θ + cos θ. Read More »
Q) If cot θ =7/8, then find the value of (1+sin θ)(1−sin θ)/(1+cos θ)(1−cos θ). (Q 22 B – 30/1/3 – CBSE 2026 Question Paper) Ans: Step 1: Let’s first simiplify the given expression: = ………… (i) Step 2: From Trigonometric identity, we know that sin 2 θ + cos 2 θ = 1 ∴ 1
Q) Two concentric circle are of radii 5 cm and 4 cm. Find the length of the chord of the larger circle which touches the smaller circle. (Q23 – 30/1/3 – CBSE 2026 Question Paper) Ans: Step 1: Let’s draw a diagram for our better understanding of the question: Here, we have 2 concentric circles,