“…For example, see Balakrishnan and Aggarwala (2012), ; Balakrishnan et al (2001), , 2013, Mahmoud et al (2014), Malik and Kumar (2017), Singh and Khan (2019), Dey et al (2019), Kumar et al (2019) and Pushkarna et al (2020). The moments of usual order statistics have been recursively derived, for example, see Balakrishnan (1985), Balakrishnan et al (2015aBalakrishnan et al ( , 2015b, Akhter et al (2020) and Liu and Balakrishnan (2020), among others.…”