Odd One Out (SSC CHSL 2020 Tier – 1)

315, 385 & 245 are the multiples of 5

But,

59 is a prime number.

Hence, 59 is the correct answer.

In TRAM, SPIT & BASK have only one vowel

But,

MOVE have two vowels

Hence, MOVE is the correct answer.

All numbers are perfect square number except one

1936 = 44²

2704 = 52²

2116 = 46²

But,

1948 = not a perfect square number

Hence, 1948 is the correct answer.

But,

Mycology is a study of fungi.

Hence, "Mycology" is the correct answer.

The pattern followed here is :

{1^st letter + 5 = 2^nd letter}, {2^nd letter + 4 = 3^rd letter} & {3^rd letter + 3 = 4^th letter}

FKOR → (F + 5 = K), (K + 4 = O) & (O + 3 = R)
RWAD → (R + 5 = W), (W + 4 = A) & (A + 3 = D)

LQUX → (L + 5 = Q), (Q + 4 = U) & (U + 3 = X)

But,

JNRV → (J + 5 ≠ N), (N + 4 = R) & (R + 3 ≠ V)

Hence, JNRV is the correct answer.

The pattern followed here is :

{1^st letter - 4 = 2^nd letter}, {2^nd letter + 2 = 3^rd letter} & {3^rd letter - 6 = 4^th letter}

FBDX → (F - 4 = B), (B + 2 = D) & (D - 6 = X)
HDFZ → (H - 4 = D), (D + 2 = F) & (F - 6 = Z)

TPRL → (T - 4 = P), (P + 2 = R) & (R - 6 = L)

But,

SNPJ → (S - 4 ≠ N), (N + 2 = P) & (P - 6 = J)

Hence, SNPJ is the correct answer.

127 → 2⁷ - 1 ⇒ 128 - 1 = 127
255 → 2⁸ - 1 ⇒ 256 - 1 = 255
512 → 2⁹ - 1 ⇒ 4096 - 1 = 4095
But,

1049 → 2¹⁰ - 1 ⇒ 1023 ≠ 1049
Hence, 1049 is the correct answer.

Sum of place value of middle 2 letters = (sum of position of first and last letters) ÷ 2
LKHZ → 11(K) + 8(H) = {(12 (L) + 26 (Z)) ÷ 2} ⇒ LHS = RHS

MNBS → 14(N) + 2(B) = {(13(M) + 19(S)) ÷ 2} ⇒ LHS = RHS

HJDT → 10(J) + 4(D) = {(8(H) + 20(T)) ÷ 2} ⇒ LHS = RHS
But,

PBGF → 2(B) + 7(G) = {(16(P) + 6(F)) ÷ 2} ⇒ LHS ≠ RHS

Hence, PBGF is the correct answer.

The pattern followed here is :

{1^st letter + 4 = 2^nd letter}, {2^nd letter + 3 = 3^rd letter} & {3^rd letter + 4 = 4^th letter

RVYC → (R + 4 = V), (V + 3 = Y) & (Y + 4 = C)
JNQU → (J + 4 = N), (N + 3 = Q) & (Q + 4 = U)

MQTX → (M + 4 = Q), (Q + 3 = T) & (T + 4 = X)

But,

LHFB → (L + 4 ≠ H), (H + 3 ≠ F) & (F + 4 ≠ B)

Hence, LHFB is the correct answer.

Following numbers are written in the form of (n³ +1)

344 → (7³ + 1) = (343 + 1) = 344

126 → (5³ + 1) = (125 + 1) = 126

1332 → (11³ + 1) = (1331 + 1) = 1332

But,

518 → (8³ + 1) = (512 + 1) = 513 ≠ 518

Hence, 518 is the correct answer.