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Watch :3 01:00
The value of (10⁴ + 324) (22⁴ + 324) (34⁴ + 324) (46⁴ + 324) (58⁴ + 324) / (4⁴ +...| Doubtify NTSE
8 views • 1 month ago Doubtify NTSE
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₹ 1 and ₹ 5 coins are available (as many required). Find the smallest payment which..| Doubtify NTSE
7 views • 2 months ago Doubtify NTSE
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History of Microprocessor
5 views • 1 month ago Doubtify BTECH CSE
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An observer in a boat finds that the angle of elevation of a tower standing on the...| Doubtify JEE
91 views • 8 months ago Doubtify JEE Main
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What is Microprocessor ?
11 views • 1 month ago Doubtify BTECH CSE
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If tanα + cotα = a, then the value of tan⁴α + cot⁴α is equal to : (1) a⁴ + 4a² + 2...| Doubtify JEE
51 views • 11 months ago Doubtify JEE Main
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Solution of the differential equation xdy - ydx = 0 represents:...| Doubtify JEE
82 views • 5 months ago Doubtify JEE Main
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If acosθ + bsinθ = 3 and asinθ - bcosθ = 4, then a² + b² has the value : (1) 25 (2)..| Doubtify JEE
100 views • 11 months ago Doubtify JEE Main
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For the equation |x²| + |x| - 6 = 0, the roots are:...| Doubtify JEE Main
46 views • 1 week ago Doubtify JEE Main
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Family y = Ax + A³ of curves will correspond to a differential equation of order :...| Doubtify JEE
34 views • 5 months ago Doubtify JEE Main
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The square of an odd integer must be of the form:...| Doubtify NTSE
509 views • 3 months ago Doubtify NTSE
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If P.E. of a system is given by relation U = A/x² - B/x, where A and B are positive...| Doubtify JEE
34 views • 11 months ago Doubtify JEE Main
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Number of zeroes in the product of 5 × 25 × 10 × 40 × 50 × 55 × 65 × 125 × 80 is:...| Doubtify NTSE
17 views • 3 months ago Doubtify NTSE
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The solution of differential equation dy/dx = cos(x - y):...| Doubtify JEE
29 views • 4 months ago Doubtify JEE Main
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If x, y, z are positive real numbers and a, b, c are rational numbers, then the...| Doubtify NTSE
16 views • 2 months ago Doubtify NTSE
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The differential equation ydy/dx + x = c represents:...| Doubtify JEE
20 views • 4 months ago Doubtify JEE Main
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The solution of the equation cos²θ + sinθ + 1 = 0 lies in the interval:...| Doubtify JEE Main
48 views • 1 month ago Doubtify JEE Main
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The sum of all two digit numbers each of which leaves remainder 3 when divided by...| Doubtify NTSE
7 views • 3 months ago Doubtify NTSE
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√(999 × 1000 × 1001 × 1002 + 1) is:...| Doubtify NTSE
15 views • 2 months ago Doubtify NTSE
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The identity √a . √b = √ab is not true only when:...| Doubtify NTSE
1 view • 2 months ago Doubtify NTSE
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A photoelectric material having work function ϕ₀ is illuminated with light of...| Doubtify JEE
15 views • 5 months ago Doubtify JEE Main
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The solution of dy/dx + y = e⁻ˣ, y(0) = 0 is:...| Doubtify JEE
40 views • 5 months ago Doubtify JEE Main
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For a positive integer n, let a(n) = 1 + 1/2 + 1/3 + 1/4 + .... + 1/ (2ⁿ - 1), then...| Doubtify JEE
33 views • 4 months ago Doubtify JEE Main
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The number of elements in the set [A = (a b 0 d): a, b, d ∈ {-1, 0, 1} and...| Doubtify JEE Main
18 views • 3 months ago Doubtify JEE Main
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Which of the following P-V curve best represents an isothermal process?...| Doubtify JEE
38 views • 7 months ago Doubtify JEE Main
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The general solution of sec θ + tan θ = √3 is:...| Doubtify JEE Main
195 views • 1 month ago Doubtify JEE Main
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If sin⁴x / 2 + cos⁴x / 3 = 1/5, then the value of cot²x is equal to:...| Doubtify JEE Main
17 views • 1 month ago Doubtify JEE Main
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A body executing S.H.M. along a straight line has a velocity of 3 m/s when it is at...| Doubtify JEE
59 views • 11 months ago Doubtify JEE Main
Watch :3 01:00
The value of 2(√2 + √6) / 3√(2 + √3) + √(2 + √3) + √(2 - √3) is...| Doubtify NTSE
3 views • 3 months ago Doubtify NTSE
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A hollow spherical ball is filled up with sand. Sand comes out through a hole at...| Doubtify JEE
37 views • 11 months ago Doubtify JEE Main
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If tan α = √3 + 1 / √3 - 1, then the expression cos 2α + (2 + √3)sin 2α is:...| Doubtify JEE Main
20 views • 2 months ago Doubtify JEE Main
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If 3 is the least prime factor of number a and 7 is the least prime factor of b...| Doubtify NTSE
37 views • 3 months ago Doubtify NTSE
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The degree of the differential equation [1 + (dy/dx)²]³/² = d²y/dx² is :...| Doubtify JEE
81 views • 5 months ago Doubtify JEE Main
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The degree of the differential equation (d³y/dx³)²/³ + 4 - 3d²y/dx² + 5d³y/dx³ = 0 ...| Doubtify JEE
51 views • 5 months ago Doubtify JEE Main
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The differential equation of all circles passing through the origin and having...| Doubtify JEE
39 views • 5 months ago Doubtify JEE Main
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The mean deviation about the median for the following data is : 7, 5, 4, 3, 2, 11,...| Doubtify JEE
150 views • 9 months ago Doubtify JEE Main