Practice Questions
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Q84.The sum of all those terms, of the arithmetic progression 3, 8, 13, . . . , 373, which are not divisible by 3, is equal to ________. JEE Main 2023 (10 Apr Shift 1) JEE Main Previous Year Paper
Q84.Let π be the set of values of Ξ», for which the system of equations 6ππ₯- 3π¦+ 3π§= 4π2, 2π₯+ 6ππ¦+ 4π§= 1 and 3π₯+ 2π¦+ 3ππ§= π has no solution. Then,12 βπβππ is equal to _______. 2π₯
Q84.Let y = y(x) be the solution of the differential equation dxdy + x(x5+1)5 y(2) is equal to (1) 637 (2) 679 128 128 (3) 693 (4) 697 128 128 is equal to
Q84.Let y = f(x) be the solution of the differential equation y(x + 1)dx βx2dy = 0, y(1) = e. Then lim xβ0+ f(x) is equal to (1) 0 (2) 1e (3) e2 (4) 1 e2 β
Q84.If the four points, whose position vectors are 3Λi β4Λj + 2Λk,Λi + 2Λj βΛk, β2Λi βΛj + 3Λk and 5Λi β2Ξ±Λj + 4Λk are coplanar, then Ξ± is equal to (1) 7317 (2) β10717 (3) β7317 (4) 10717 β β β
Q85.The foci of a hyperbola are ( Β± 2, 0 ) and its eccentricity is 32. A tangent, perpendicular to the line 2π₯+ 3π¦= 6, is drawn at a point in the first quadrant on the hyperbola. If the intercepts made by the tangent on the π₯- and π¦-axes are π and π respectively, then |6π| + | 5π| is equal to
Q85.Let π΄= 1, 2, 3, 4, . . . . . . . . . . 10 and π΅= 0, 1, 2, 3, 4 . The number of elements in the relation π = (π, π) βπ΄Γ π΄: 2π- π2 + 3π- πβπ΅ is __________ .
Q85.Let the vectors βa, b, βcrepresent three coterminous edges of a parallelopiped of volume V . Then the volume of β β the parallelopiped, whose coterminous edges are represented by βa, b +βcand βa+ 2 b + 3βcis equal to (1) 2V (2) 6V (3) V (4) 3V
Q85.Let Ξ» βR,βa = Ξ»Λi + 2Λj β3Λk,βb = Λi βΞ»Λj + 2Λk, If ((βa βb) (βa βb)) (βa βb) β β + Γ β 2 is equal to Ξ»(βa b) (βa b) (1) 140 (2) 132 (3) 144 (4) 136 β β b, then the value of Γ β3 b β βcis
Q85.If the domain of the function ππ₯= sec-1 is [πΌ, π½) βͺ( πΎ, πΏ], then 3πΌ+ 10π½+ πΎ+ 21πΏ is equal to 5π₯+ 3 __________ is the largest, = 4AB. If the area of βCAB is 2β3 - 3 unit2, when ΞΈ2
Q85.The mean of the coefficients of π₯, π₯2, β¦ β¦ , π₯7 in the binomial expression of ( 2 + π₯) 9 is _________
Q85.Let Ξ± = 4Λi + 3Λj + 5Λk and Ξ² = Λi + 2Λj β4Λk. Let Ξ²1 be parallel to Ξ± and Ξ²2 be perpendicular to Ξ±. If β β β β + Ξ² = Ξ²1 + Ξ²2 , then the value of 5 Ξ²2 β (Λi +Λj Λk) is (1) 6 (2) 11 (3) 7 (4) 9 β β β β b + 43 = 0 , βaΓβc= b Γβc, then βaβ b is equal to
Q85.If the points with position vectors Ξ±Λi + 10Λj + 13Λk, 6Λi + 11Λj + 11Λk, 92Λi + Ξ²Λj β8Λk are collinear, then (19Ξ± β6Ξ²)2 is equal to (1) 36 (2) 25 (3) 49 (4) 16 β β
Q85.Let βa,βb andβcbe three non zero vectors such that βb β βc= 0 and βaΓ (βb Γβc) βbββc β β β β β is equal to Γ Γ b β d =βaβ b, then (βa b) β (βc d) (1) 3 (2) 1 4 2 (3) β14 (4) 41
Q85.Let βa = Λi + 4Λj + 2Λk, b = 3Λi β2Λj + 7Λk and βc= 2Λi βΛj + 4Λk. If a vector d satisfies d Γ b =βcΓ b and d β βa = 24, β2 then d is equal to (1) 323 (2) 423 (3) 313 (4) 413 β β β 2
Q85.Let π= {1, 2, 3, 4, 5, 6}. Then the number of oneone functions π: πβπ( π) , where π( π) denote the power set of π, such that π( π) βπ( π) where π< π is
Q85.If four distinct points with position vectors βa,βb,βcand βd are coplanar, then [βaβbβc] + + + + (1) [βd βb βa] [βa βc βd ] [βdβb βc] (2) [βa βd βb] [βd βc βa] [βd βb βc] (3) [βd βc βa] + [βb βd βa] + [βc βd βb ] (4) [βb βc βd ] + [βd βa βc] + [βd βb βa] β β β = 27 and b β βc=
Q85.Let Ξ» βZ, βa = Ξ»Λi + Λj βΛk and b = 3Λi βΛj + 2Λk. Let βc be a vector such that + b = 0, βaβ βc= β17 and b β βc= β20. Then βcΓ (Ξ»Λi + Λj + Λk) is equal to (βa β β β 2 +βc) Γβc (1) 46 (2) 53 (3) 62 (4) 49 JEE Main 2023 (12 Apr Shift 1) JEE Main Previous Year Paper
Q85.The coefficient of π₯7 in 1 - π₯+ 2π₯310 is __________ .
Q85.If ππ₯= π₯2 + π'1π₯+ π"2 and ππ₯= π1π₯2 + π₯π'π₯+ π"π₯, then the value of π4 - π4 is equal to _____ .
Q85.The remainder on dividing 599 by 11 is _____ .
Q85.Suppose βπ=20230 π2 Β· 2023πΆπ= 2023 Γ πΌΓ 22022, then the value of πΌ is
Q85.Let the vectors u1β = Λi + Λj + aΛk, u2β = Λi + bΛj + Λk, and u3β = cΛi + Λj + Λk be coplanar. If the vectors βββ β v1 = (a + b)Λi + cΛj + cΛk, v2 = aΛi + (b + c)Λj + aΛk and βv3 = bΛi + bΛj + (c + a)Λk are also coplanar, then 6(a + b + c) is equal to (1) 0 (2) 4 (3) 12 (4) 6
Q85.Let βa = 5Λi βΛj β3Λk and b = Λi + 3Λj + 5Λk be two vectors. Then which one of the following statements is TRUE? β β (1) β13 (2) β17 Projection of βa on b is and the direction Projection of βa on b is and the direction of β35 β35 of the projection vector is opposite to the the projection vector is opposite to the direction β β direction of b of b β β (3) 17 (4) 13 Projection of βa on b is and the direction of Projection of βa on b is and the direction of β35 β35 the projection vector is opposite to the direction the projection vector is opposite to the direction β of b of βa β
Q85.If the vectors βa = Ξ»Λi + ΞΌΛj + 4Λk, b = β2Λi + 4Λj β2Λk and βc= 2Λi + 3Λj + Λk are coplanar and the projection of βa β on the vector b is β54 units, then the sum of all possible values of Ξ» + ΞΌ is equal to (1) 0 (2) 6 (3) 24 (4) 18 β